SUMMARY Being compatible with GTK's icon recolorization could made icon themes made primarily for GTK desktop environments way more usable in KDE. GTK also allows icons provided by applications to be recolored unlike KDE's way (since kiconthemes requires FollowColorScheme=true in index.theme which hicolor doesn't have) so various icons provided by applications could render better with this, too. GTK uses `-symbolic` icon name ending as a sign the icon has to be recolored. By default, it recolors all elements with text color but if the element has one of the following classes: * error * warning * success They are recolored into the following colors accordingly: * red * orange * green The exact default values are: https://gitlab.gnome.org/GNOME/gtk/-/blob/a6792b83e33a4e2bc3143dd626b345f5c27d858c/gtk/gtkicontheme.c#L3862-3865 It seem to be themable using GTK themes though: https://gitlab.gnome.org/GNOME/gtk/-/blob/a6792b83e33a4e2bc3143dd626b345f5c27d858c/gtk/gtkcssstyle.c#L871 Here's how the classes are injected into SVG: https://gitlab.gnome.org/GNOME/gtk/-/blob/a6792b83e33a4e2bc3143dd626b345f5c27d858c/gtk/gdktextureutils.c#L208 They also seem to support recoloring PNG but not sure how much that's relevant for kiconthemes: https://gitlab.gnome.org/GNOME/gtk/-/blob/a6792b83e33a4e2bc3143dd626b345f5c27d858c/gtk/gtkicontheme.c#L2117 As a starting point, this could be enabled only when KDE's icon recolorization is not enabled, i.e. when the icon theme's index.theme doesn't have FollowsColorScheme=true STEPS TO REPRODUCE 1. Use an icon theme made for GTK DEs or an application providing a symbolic icon made for GTK OBSERVED RESULT Icons are recolored as in GTK DEs EXPECTED RESULT Icons aren't recolored and look broken