This is a roughly thrown-together patch demonstrating how an
accent colour can be implemented via modifiying KColorScheme.
Notes about what sucks currently:
- No way to query the true colour of an item getting overidden by an accent colour (bad for stuff like KColorSchemeEditor)
- Accent color text on accent colour background is 100% unreadable
Stuff I plan to do:
- Split Accent → AccentForeground and AccentBackground.
- Figure out a way to more elegantly handle inactive and disabled accent colours