Also QT provides a cross-platform color chooser widget. https://doc.qt.io/qt-5/qcolordialog.html https://doc.qt.io/qt-5/qcolordialog.html KDE's KColorChooser

Also QT provides a cross-platform color chooser widget. https://doc.qt.io/qt-5/qcolordialog.html https://doc.qt.io/qt-5/qcolordialog.html KDE's KColorChooser is simply a wrapper around this and is less than 100 lines of code, mostly setting up the about box. https://kde.org/applications/graphics/kcolorchooser/ https://kde.org/applications/graphics/kcolorchooser/ This could have trivially been made into a cross-platform color chooser that uses significantly less resources. On my Linux box Fucking Color Chooser spawns 4 fucking processes uses 128 MB of RAM and 4% CPU. KColorChooser uses 15 MB in one process and near zero CPU. Please stop making everything a web application.