Features in KDE Base
Deprecate KDecoration's AbilityColor
Nobody is interested in whether the Abilities are supported.
There is one method in KWin core checking for the colors
supported by the currently loaded decoration:
This method is not called from anywhere inside KWin, but is
part of the D-Bus interface, though nobody in KDE's repository
is calling it .
As it is part of public API the Abilities are only deprecated
and scheduled for removal with the next big break.