diff --git a/rizin b/rizin
index cdc80202..f2a1e5e0 160000
--- a/rizin
+++ b/rizin
@@ -1 +1 @@
-Subproject commit cdc80202dd7eaf5bacf0e36a64f964c822e67dd4
+Subproject commit f2a1e5e09087550e70122c3a2bedd4e2a02f77f1
diff --git a/src/common/ColorThemeWorker.cpp b/src/common/ColorThemeWorker.cpp
index aabc0c1f..c4abfd5c 100644
--- a/src/common/ColorThemeWorker.cpp
+++ b/src/common/ColorThemeWorker.cpp
@@ -37,9 +37,7 @@ ColorThemeWorker::ColorThemeWorker(QObject *parent) : QObject(parent)
         QDir().mkpath(customRzThemesLocationPath);
     }
 
-    QDir currDir {
-        QStringLiteral("%1%2%3").arg(rz_path_prefix(nullptr)).arg(RZ_SYS_DIR).arg(RZ_THEMES)
-    };
+    QDir currDir { QStringLiteral("%1%2%3").arg(rz_path_prefix(nullptr), RZ_SYS_DIR, RZ_THEMES) };
     if (currDir.exists()) {
         standardRzThemesLocationPath = currDir.absolutePath();
     } else {
@@ -78,27 +76,15 @@ QString ColorThemeWorker::copy(const QString &srcThemeName, const QString &copyT
     return save(getTheme(srcThemeName), copyThemeName);
 }
 
-QString ColorThemeWorker::save(const QJsonDocument &theme, const QString &themeName) const
+QString ColorThemeWorker::save(const Theme &theme, const QString &themeName) const
 {
     QFile fOut(QDir(customRzThemesLocationPath).filePath(themeName));
     if (!fOut.open(QFile::WriteOnly | QFile::Truncate)) {
         return tr("The file <b>%1</b> cannot be opened.").arg(QFileInfo(fOut).filePath());
     }
 
-    QJsonObject obj = theme.object();
-    for (auto it = obj.constBegin(); it != obj.constEnd(); it++) {
-
-        QJsonArray arr = it.value().toArray();
-        QColor color;
-        if (arr.isEmpty()) {
-            color = it.value().toVariant().value<QColor>();
-        } else if (arr.size() == 4) {
-            color = QColor(arr[0].toInt(), arr[1].toInt(), arr[2].toInt(), arr[3].toInt());
-        } else if (arr.size() == 3) {
-            color = QColor(arr[0].toInt(), arr[1].toInt(), arr[2].toInt());
-        } else {
-            continue;
-        }
+    for (auto it = theme.constBegin(); it != theme.constEnd(); it++) {
+        const QColor &color = it.value();
         if (cutterSpecificOptions.contains(it.key())) {
             fOut.write(QString("#~%1 rgb:%2\n")
                                .arg(it.key(), color.name(QColor::HexArgb).remove('#'))
@@ -125,37 +111,18 @@ bool ColorThemeWorker::isThemeExist(const QString &name) const
     return themes.contains(name);
 }
 
-QJsonDocument ColorThemeWorker::getTheme(const QString &themeName) const
+ColorThemeWorker::Theme ColorThemeWorker::getTheme(const QString &themeName) const
 {
-    int r, g, b, a;
-    CutterJson rzTheme;
-    QVariantMap theme;
+    Theme theme;
     QString curr = Config()->getColorTheme();
 
     if (themeName != curr) {
         RzCoreLocked core(Core());
         rz_core_theme_load(core, themeName.toUtf8().constData());
-        rzTheme = Core()->cmdj("ecj");
+        theme = Core()->getTheme();
         rz_core_theme_load(core, curr.toUtf8().constData());
     } else {
-        rzTheme = Core()->cmdj("ecj");
-    }
-
-    for (CutterJson value : rzTheme) {
-        QJsonArray arr;
-        int count = 0;
-        for (CutterJson element : value) {
-            arr.append(element.toSt64());
-            count++;
-            if (count >= 3) {
-                break;
-            }
-        }
-        while (count < 3) {
-            arr.append(0);
-        }
-        arr.append(255);
-        theme[value.key()] = arr;
+        theme = Core()->getTheme();
     }
 
     ColorFlags colorFlags = ColorFlags::DarkFlag;
@@ -164,14 +131,13 @@ QJsonDocument ColorThemeWorker::getTheme(const QString &themeName) const
     }
 
     for (auto &it : cutterSpecificOptions) {
-        Configuration::cutterOptionColors[it][colorFlags].getRgb(&r, &g, &b, &a);
-        theme.insert(it, QJsonArray { r, g, b, a });
+        theme.insert(it, QColor(Configuration::cutterOptionColors[it][colorFlags]));
     }
 
     if (isCustomTheme(themeName)) {
         QFile src(QDir(customRzThemesLocationPath).filePath(themeName));
         if (!src.open(QFile::ReadOnly)) {
-            return QJsonDocument();
+            return {};
         }
         QStringList sl;
         for (auto &line : QString(src.readAll()).split('\n', CUTTER_QT_SKIP_EMPTY_PARTS)) {
@@ -181,8 +147,7 @@ QJsonDocument ColorThemeWorker::getTheme(const QString &themeName) const
             if (sl.size() != 3 || sl[0][0] == '#') {
                 continue;
             }
-            QColor(sl[2]).getRgb(&r, &g, &b, &a);
-            theme.insert(sl[1], QJsonArray({ r, g, b, a }));
+            theme.insert(sl[1], QColor(sl[2]));
         }
     }
 
@@ -190,21 +155,7 @@ QJsonDocument ColorThemeWorker::getTheme(const QString &themeName) const
         theme.remove(key);
     }
 
-    // manualy converting instead of using QJsonObject::fromVariantMap because
-    // Qt < 5.6 QJsonValue.fromVariant doesn't expect QVariant to already contain
-    // QJson values like QJsonArray.
-    // https://github.com/qt/qtbase/commit/26237f0a2d8db80024b601f676bbce54d483e672
-    QJsonObject obj;
-    for (auto it = theme.begin(); it != theme.end(); it++) {
-        auto &value = it.value();
-        if (value.canConvert<QJsonArray>()) {
-            obj[it.key()] = it.value().value<QJsonArray>();
-        } else {
-            obj[it.key()] = QJsonValue::fromVariant(value);
-        }
-    }
-
-    return QJsonDocument(obj);
+    return theme;
 }
 
 QString ColorThemeWorker::deleteTheme(const QString &themeName) const
@@ -291,11 +242,10 @@ bool ColorThemeWorker::isFileTheme(const QString &filePath, bool *ok) const
 
     const QString colors = "black|red|white|green|magenta|yellow|cyan|blue|gray|none";
     QString options =
-            (Core()->cmdj("ecj").keys() << cutterSpecificOptions).join('|').replace(".", "\\.");
+            (Core()->getThemeKeys() << cutterSpecificOptions).join('|').replace(".", "\\.");
 
-    QString pattern = QString("((ec\\s+(%1)\\s+(((rgb:|#)[0-9a-fA-F]{3,8})|(%2))))\\s*")
-                              .arg(options)
-                              .arg(colors);
+    QString pattern =
+            QString("((ec\\s+(%1)\\s+(((rgb:|#)[0-9a-fA-F]{3,8})|(%2))))\\s*").arg(options, colors);
     // The below construct mimics the behaviour of QRegexP::exactMatch(), which was here before
     QRegularExpression regexp("\\A(?:" + pattern + ")\\z");
 
@@ -326,7 +276,7 @@ QStringList ColorThemeWorker::customThemes() const
 const QStringList &ColorThemeWorker::getRizinSpecificOptions()
 {
     if (rizinSpecificOptions.isEmpty()) {
-        rizinSpecificOptions = Core()->cmdj("ecj").keys();
+        rizinSpecificOptions << Core()->getThemeKeys();
     }
     return rizinSpecificOptions;
 }
diff --git a/src/common/ColorThemeWorker.h b/src/common/ColorThemeWorker.h
index 3d67826f..3942a428 100644
--- a/src/common/ColorThemeWorker.h
+++ b/src/common/ColorThemeWorker.h
@@ -18,6 +18,8 @@ class ColorThemeWorker : public QObject
 {
     Q_OBJECT
 public:
+    typedef QHash<QString, QColor> Theme;
+
     /**
      * @brief cutterSpecificOptions is list of all available Cutter-only color options.
      */
@@ -54,7 +56,7 @@ public:
      * Name of theme to save.
      * @return "" on success or error message.
      */
-    QString save(const QJsonDocument &theme, const QString &themeName) const;
+    QString save(const Theme &theme, const QString &themeName) const;
 
     /**
      * @brief Returns whether or not @a themeName theme is custom (created by user or imported) or
@@ -71,12 +73,11 @@ public:
     bool isThemeExist(const QString &name) const;
 
     /**
-     * @brief Returns theme as Json where key is option name and value is array of 3 Ints (Red,
-     * Green, Blue).
+     * @brief Returns theme as QHash where key is option name and value is QColor.
      * @param themeName
      * Theme to get.
      */
-    QJsonDocument getTheme(const QString &themeName) const;
+    Theme getTheme(const QString &themeName) const;
 
     /**
      * @brief Deletes theme named @a themeName.
diff --git a/src/common/Configuration.cpp b/src/common/Configuration.cpp
index 0a73eb34..5239ad6b 100644
--- a/src/common/Configuration.cpp
+++ b/src/common/Configuration.cpp
@@ -534,13 +534,9 @@ void Configuration::setColorTheme(const QString &theme)
         s.setValue("theme", theme);
     }
 
-    QJsonObject colorTheme = ThemeWorker().getTheme(theme).object();
+    ColorThemeWorker::Theme colorTheme = ThemeWorker().getTheme(theme);
     for (auto it = colorTheme.constBegin(); it != colorTheme.constEnd(); it++) {
-        QJsonArray rgb = it.value().toArray();
-        if (rgb.size() != 4) {
-            continue;
-        }
-        setColor(it.key(), QColor(rgb[0].toInt(), rgb[1].toInt(), rgb[2].toInt(), rgb[3].toInt()));
+        setColor(it.key(), it.value());
     }
 
     emit colorsUpdated();
diff --git a/src/common/SettingsUpgrade.cpp b/src/common/SettingsUpgrade.cpp
index 4ef57e59..a03a818a 100644
--- a/src/common/SettingsUpgrade.cpp
+++ b/src/common/SettingsUpgrade.cpp
@@ -181,26 +181,21 @@ void Cutter::initializeSettings()
 
 static void removeObsoleteOptionsFromCustomThemes()
 {
-    const QStringList options = Core()->cmdj("ecj").keys()
-            << ColorThemeWorker::cutterSpecificOptions;
-    RzList *themes_list = rz_core_theme_list(Core()->core());
-    RzListIter *th_iter;
-    const char *th;
-    CutterRzListForeach (themes_list, th_iter, const char, th) {
-        auto theme = QString(th).trimmed();
-        if (!ThemeWorker().isCustomTheme(theme)) {
+    const QStringList options = Core()->getThemeKeys() << ColorThemeWorker::cutterSpecificOptions;
+    QStringList themes = Core()->getColorThemes();
+    for (const auto &themeName : themes) {
+        if (!ThemeWorker().isCustomTheme(themeName)) {
             continue;
         }
-        QJsonObject updatedTheme;
-        auto sch = ThemeWorker().getTheme(theme).object();
-        for (const auto &key : sch.keys()) {
-            if (options.contains(key)) {
-                updatedTheme.insert(key, sch[key]);
+        ColorThemeWorker::Theme sch = ThemeWorker().getTheme(themeName);
+        ColorThemeWorker::Theme updatedTheme;
+        for (auto it = sch.constBegin(); it != sch.constEnd(); ++it) {
+            if (options.contains(it.key())) {
+                updatedTheme.insert(it.key(), it.value());
             }
         }
-        ThemeWorker().save(QJsonDocument(updatedTheme), theme);
+        ThemeWorker().save(updatedTheme, themeName);
     }
-    rz_list_free(themes_list);
 }
 
 void Cutter::migrateThemes()
diff --git a/src/core/Cutter.cpp b/src/core/Cutter.cpp
index 44a79343..3858b88b 100644
--- a/src/core/Cutter.cpp
+++ b/src/core/Cutter.cpp
@@ -2157,26 +2157,9 @@ void CutterCore::stopDebug()
     if (currentlyEmulating) {
         cmdEsil("aeim-; aei-; wcr; .ar-; aets-");
         currentlyEmulating = false;
-    } else if (currentlyAttachedToPID != -1) {
-        // Use cmd because cmdRaw would not work with command concatenation
-        cmd(QString("dp- %1; o %2; .ar-")
-                    .arg(QString::number(currentlyAttachedToPID), currentlyOpenFile));
-        currentlyAttachedToPID = -1;
     } else {
-        QString ptraceFiles = "";
-        // close ptrace file descriptors left open
-        RzCoreLocked core(Core());
-        RzList *descs = rz_id_storage_list(core->io->files);
-        RzListIter *it;
-        RzIODesc *desc;
-        CutterRzListForeach (descs, it, RzIODesc, desc) {
-            QString URI = QString(desc->uri);
-            if (URI.contains("ptrace")) {
-                ptraceFiles += "o-" + QString::number(desc->fd) + ";";
-            }
-        }
-        // Use cmd because cmdRaw would not work with command concatenation
-        cmd("doc" + ptraceFiles);
+        rz_core_debug_process_close(core());
+        currentlyAttachedToPID = -1;
     }
 
     syncAndSeekProgramCounter();
@@ -2331,7 +2314,16 @@ void CutterCore::continueUntilSyscall()
             return;
         }
     } else {
-        if (!asyncCmd("dcs", debugTask)) {
+        if (!asyncTask(
+                    [](RzCore *core) {
+                        rz_cons_break_push(reinterpret_cast<RzConsBreak>(rz_debug_stop), core->dbg);
+                        rz_reg_arena_swap(core->dbg->reg, true);
+                        rz_debug_continue_syscalls(core->dbg, NULL, 0);
+                        rz_cons_break_pop();
+                        rz_core_dbg_follow_seek_register(core);
+                        return nullptr;
+                    },
+                    debugTask)) {
             return;
         }
     }
@@ -2390,7 +2382,15 @@ void CutterCore::stepOverDebug()
             return;
         }
     } else {
-        if (!asyncCmd("dso", debugTask)) {
+        bool ret;
+        asyncTask(
+                [&](RzCore *core) {
+                    ret = rz_core_debug_step_over(core, 1);
+                    rz_core_dbg_follow_seek_register(core);
+                    return nullptr;
+                },
+                debugTask);
+        if (!ret) {
             return;
         }
     }
@@ -2413,7 +2413,15 @@ void CutterCore::stepOutDebug()
     }
 
     emit debugTaskStateChanged();
-    if (!asyncCmd("dsf", debugTask)) {
+    bool ret;
+    asyncTask(
+            [&](RzCore *core) {
+                ret = rz_core_debug_step_until_frame(core);
+                rz_core_dbg_follow_seek_register(core);
+                return nullptr;
+            },
+            debugTask);
+    if (!ret) {
         return;
     }
 
@@ -2438,7 +2446,15 @@ void CutterCore::stepBackDebug()
             return;
         }
     } else {
-        if (!asyncCmd("dsb", debugTask)) {
+        bool ret;
+        asyncTask(
+                [&](RzCore *core) {
+                    ret = rz_core_debug_step_back(core, 1);
+                    rz_core_dbg_follow_seek_register(core);
+                    return nullptr;
+                },
+                debugTask);
+        if (!ret) {
             return;
         }
     }
@@ -2457,11 +2473,11 @@ void CutterCore::stepBackDebug()
 QStringList CutterCore::getDebugPlugins()
 {
     QStringList plugins;
-
-    for (CutterJson pluginObject : cmdj("dLj")) {
-        QString plugin = pluginObject[RJsonKey::name].toString();
-
-        plugins << plugin;
+    RzListIter *iter;
+    RzDebugPlugin *plugin;
+    CORE_LOCK();
+    CutterRzListForeach (core->dbg->plugins, iter, RzDebugPlugin, plugin) {
+        plugins << plugin->name;
     }
     return plugins;
 }
@@ -2661,11 +2677,9 @@ void CutterCore::disableBreakpoint(RVA addr)
 
 void CutterCore::setBreakpointTrace(int index, bool enabled)
 {
-    if (enabled) {
-        cmdRaw(QString("dbite %1").arg(index));
-    } else {
-        cmdRaw(QString("dbitd %1").arg(index));
-    }
+    CORE_LOCK();
+    RzBreakpointItem *bpi = rz_bp_get_index(core->dbg->bp, index);
+    bpi->trace = enabled;
 }
 
 static BreakpointDescription breakpointDescriptionFromRizin(int index, rz_bp_item_t *bpi)
@@ -2746,11 +2760,6 @@ bool CutterCore::isBreakpoint(const QList<RVA> &breakpoints, RVA addr)
     return breakpoints.contains(addr);
 }
 
-CutterJson CutterCore::getBacktrace()
-{
-    return cmdj("dbtj");
-}
-
 QList<ProcessDescription> CutterCore::getProcessThreads(int pid = -1)
 {
     CORE_LOCK();
@@ -4120,15 +4129,56 @@ QString CutterCore::getVersionInformation()
     return versionInfo;
 }
 
-QList<QString> CutterCore::getColorThemes()
+QStringList CutterCore::getColorThemes()
 {
-    QList<QString> r;
-    for (CutterJson s : cmdj("ecoj")) {
-        r << s.toString();
+    QStringList r;
+    CORE_LOCK();
+    RzList *themes_list = rz_core_theme_list(core);
+    RzListIter *it;
+    const char *th;
+    CutterRzListForeach (themes_list, it, const char, th) {
+        r << fromOwnedCharPtr(rz_str_trim_dup(th));
     }
+    rz_list_free(themes_list);
     return r;
 }
 
+QHash<QString, QColor> CutterCore::getTheme()
+{
+    QHash<QString, QColor> theme;
+    for (int i = 0;; ++i) {
+        const char *k = rz_cons_pal_get_name(i);
+        if (!k) {
+            break;
+        }
+        RzColor color = rz_cons_pal_get_i(i);
+        theme.insert(k, QColor(color.r, color.g, color.b));
+    }
+    return theme;
+}
+
+QStringList CutterCore::getThemeKeys()
+{
+    QStringList stringList;
+    for (int i = 0;; ++i) {
+        const char *k = rz_cons_pal_get_name(i);
+        if (!k) {
+            break;
+        }
+        stringList << k;
+    }
+    return stringList;
+}
+
+bool CutterCore::setColor(const QString &key, const QString &color)
+{
+    if (!rz_cons_pal_set(key.toUtf8().constData(), color.toUtf8().constData())) {
+        return false;
+    }
+    rz_cons_pal_update_event();
+    return true;
+}
+
 QString CutterCore::ansiEscapeToHtml(const QString &text)
 {
     int len;
diff --git a/src/core/Cutter.h b/src/core/Cutter.h
index bc76233a..66b7b0f3 100644
--- a/src/core/Cutter.h
+++ b/src/core/Cutter.h
@@ -393,7 +393,10 @@ public:
     QString getConfig(const char *k);
     QString getConfig(const QString &k) { return getConfig(k.toUtf8().constData()); }
     QString getConfigDescription(const char *k);
-    QList<QString> getColorThemes();
+    QStringList getColorThemes();
+    QHash<QString, QColor> getTheme();
+    QStringList getThemeKeys();
+    bool setColor(const QString &key, const QString &color);
 
     /* Assembly\Hexdump related methods */
     QByteArray assemble(const QString &code);
@@ -449,7 +452,6 @@ public:
      * @return List of ProcessDescription
      */
     QList<ProcessDescription> getProcessThreads(int pid);
-    CutterJson getBacktrace();
     /**
      * @brief Get a list of heap chunks
      * Uses RZ_API rz_heap_chunks_list to get vector of chunks
diff --git a/src/dialogs/preferences/ColorThemeEditDialog.cpp b/src/dialogs/preferences/ColorThemeEditDialog.cpp
index 93838698..bc0dff62 100644
--- a/src/dialogs/preferences/ColorThemeEditDialog.cpp
+++ b/src/dialogs/preferences/ColorThemeEditDialog.cpp
@@ -72,7 +72,7 @@ ColorThemeEditDialog::~ColorThemeEditDialog()
 void ColorThemeEditDialog::accept()
 {
     colorTheme = Config()->getColorTheme();
-    QJsonDocument sch = ui->colorThemeListView->colorSettingsModel()->getTheme();
+    ColorThemeWorker::Theme sch = ui->colorThemeListView->colorSettingsModel()->getTheme();
     if (ThemeWorker().isCustomTheme(colorTheme)) {
         QString err = ThemeWorker().save(sch, colorTheme);
         if (!err.isEmpty()) {
@@ -133,7 +133,7 @@ void ColorThemeEditDialog::colorOptionChanged(const QColor &newColor)
 
     Config()->setColor(currOption.optionName, currOption.color);
     if (!ColorThemeWorker::cutterSpecificOptions.contains(currOption.optionName)) {
-        Core()->cmdRaw(QString("ec %1 %2").arg(currOption.optionName).arg(currOption.color.name()));
+        Core()->setColor(currOption.optionName, currOption.color.name());
     }
     previewDisasmWidget->colorsUpdatedSlot();
 }
diff --git a/src/widgets/BacktraceWidget.cpp b/src/widgets/BacktraceWidget.cpp
index 433a1b1e..d4413c39 100644
--- a/src/widgets/BacktraceWidget.cpp
+++ b/src/widgets/BacktraceWidget.cpp
@@ -44,27 +44,25 @@ void BacktraceWidget::updateContents()
 
 void BacktraceWidget::setBacktraceGrid()
 {
+    RzList *list = rz_core_debug_backtraces(Core()->core());
     int i = 0;
-    for (CutterJson backtraceItem : Core()->getBacktrace()) {
-        QString progCounter = RzAddressString(backtraceItem["pc"].toRVA());
-        QString stackPointer = RzAddressString(backtraceItem["sp"].toRVA());
-        st64 frameSize = backtraceItem["frame_size"].toSt64();
-        QString funcName = backtraceItem["fname"].toString();
-        QString desc = backtraceItem["desc"].toString();
+    RzListIter *iter;
+    RzBacktrace *bt;
+    CutterRzListForeach (list, iter, RzBacktrace, bt) {
+        QString funcName = bt->fcn ? bt->fcn->name : "";
+        QString pc = RzAddressString(bt->frame ? bt->frame->addr : 0);
+        QString sp = RzAddressString(bt->frame ? bt->frame->sp : 0);
+        QString frameSize = QString::number(bt->frame ? bt->frame->size : 0);
+        QString desc = bt->desc;
 
-        QStandardItem *rowPC = new QStandardItem(progCounter);
-        QStandardItem *rowSP = new QStandardItem(stackPointer);
-        QStandardItem *rowFrameSize = new QStandardItem(QString::number(frameSize));
-        QStandardItem *rowFuncName = new QStandardItem(funcName);
-        QStandardItem *rowDesc = new QStandardItem(desc);
-
-        modelBacktrace->setItem(i, 0, rowFuncName);
-        modelBacktrace->setItem(i, 1, rowSP);
-        modelBacktrace->setItem(i, 2, rowPC);
-        modelBacktrace->setItem(i, 3, rowDesc);
-        modelBacktrace->setItem(i, 4, rowFrameSize);
-        i++;
+        modelBacktrace->setItem(i, 0, new QStandardItem(funcName));
+        modelBacktrace->setItem(i, 1, new QStandardItem(sp));
+        modelBacktrace->setItem(i, 2, new QStandardItem(pc));
+        modelBacktrace->setItem(i, 3, new QStandardItem(desc));
+        modelBacktrace->setItem(i, 4, new QStandardItem(frameSize));
+        ++i;
     }
+    rz_list_free(list);
 
     // Remove irrelevant old rows
     if (modelBacktrace->rowCount() > i) {
diff --git a/src/widgets/ColorThemeListView.cpp b/src/widgets/ColorThemeListView.cpp
index a5c93354..7d534f57 100644
--- a/src/widgets/ColorThemeListView.cpp
+++ b/src/widgets/ColorThemeListView.cpp
@@ -220,13 +220,7 @@ ColorThemeListView::ColorThemeListView(QWidget *parent) : QListView(parent)
     setItemDelegate(new ColorOptionDelegate(this));
     setResizeMode(ResizeMode::Adjust);
 
-    QJsonArray rgb =
-            colorSettingsModel()->getTheme().object().find("gui.background").value().toArray();
-    if (rgb.size() == 3) {
-        backgroundColor = QColor(rgb[0].toInt(), rgb[1].toInt(), rgb[2].toInt());
-    } else {
-        backgroundColor = palette().base().color();
-    }
+    backgroundColor = colorSettingsModel()->getTheme().find("gui.background").value();
 
     connect(&blinkTimer, &QTimer::timeout, this, &ColorThemeListView::blinkTimeout);
 
@@ -241,7 +235,7 @@ void ColorThemeListView::currentChanged(const QModelIndex &current, const QModel
     ColorOption prev = previous.data(Qt::UserRole).value<ColorOption>();
     Config()->setColor(prev.optionName, prev.color);
     if (ThemeWorker().getRizinSpecificOptions().contains(prev.optionName)) {
-        Core()->cmdRaw(QString("ec %1 %2").arg(prev.optionName).arg(prev.color.name()));
+        Core()->setColor(prev.optionName, prev.color.name());
     }
 
     QListView::currentChanged(current, previous);
@@ -267,9 +261,7 @@ void ColorThemeListView::mouseReleaseEvent(QMouseEvent *e)
                 .contains(e->pos())) {
         ColorOption co = currentIndex().data(Qt::UserRole).value<ColorOption>();
         co.changed = false;
-        QJsonArray rgb =
-                ThemeWorker().getTheme(Config()->getColorTheme()).object()[co.optionName].toArray();
-        co.color = QColor(rgb[0].toInt(), rgb[1].toInt(), rgb[2].toInt());
+        co.color = ThemeWorker().getTheme(Config()->getColorTheme())[co.optionName];
         model()->setData(currentIndex(), QVariant::fromValue(co));
         QCursor c;
         c.setShape(Qt::CursorShape::ArrowCursor);
@@ -307,7 +299,7 @@ void ColorThemeListView::blinkTimeout()
     auto updateColor = [](const QString &name, const QColor &color) {
         Config()->setColor(name, color);
         if (ThemeWorker().getRizinSpecificOptions().contains(name)) {
-            Core()->cmdRaw(QString("ec %1 %2").arg(name).arg(color.name()));
+            Core()->setColor(name, color.name());
         }
     };
 
@@ -374,16 +366,10 @@ void ColorSettingsModel::updateTheme()
 {
     beginResetModel();
     theme.clear();
-    QJsonObject obj = ThemeWorker().getTheme(Config()->getColorTheme()).object();
+    ColorThemeWorker::Theme obj = ThemeWorker().getTheme(Config()->getColorTheme());
 
     for (auto it = obj.constBegin(); it != obj.constEnd(); it++) {
-        QJsonArray rgb = it.value().toArray();
-        if (rgb.size() != 4) {
-            continue;
-        }
-        theme.push_back({ it.key(),
-                          QColor(rgb[0].toInt(), rgb[1].toInt(), rgb[2].toInt(), rgb[3].toInt()),
-                          false });
+        theme.push_back({ it.key(), it.value(), false });
     }
 
     std::sort(theme.begin(), theme.end(), [](const ColorOption &f, const ColorOption &s) {
@@ -395,15 +381,13 @@ void ColorSettingsModel::updateTheme()
     endResetModel();
 }
 
-QJsonDocument ColorSettingsModel::getTheme() const
+ColorThemeWorker::Theme ColorSettingsModel::getTheme() const
 {
-    QJsonObject obj;
-    int r, g, b, a;
+    ColorThemeWorker::Theme th;
     for (auto &it : theme) {
-        it.color.getRgb(&r, &g, &b, &a);
-        obj.insert(it.optionName, QJsonArray({ r, g, b, a }));
+        th.insert(it.optionName, it.color);
     }
-    return QJsonDocument(obj);
+    return th;
 }
 
 const QMap<QString, OptionInfo> optionInfoMap__ = {
diff --git a/src/widgets/ColorThemeListView.h b/src/widgets/ColorThemeListView.h
index 8525312d..f992f2f7 100644
--- a/src/widgets/ColorThemeListView.h
+++ b/src/widgets/ColorThemeListView.h
@@ -73,7 +73,7 @@ public:
 
     void updateTheme();
 
-    QJsonDocument getTheme() const;
+    QHash<QString, QColor> getTheme() const;
 
 private:
     QList<ColorOption> theme;