I accidentally changed some of Kate's default color schemes. How do I set them back to default? I tried reinstalling (including with the option to remove config files) but it kept my changes.
The file you need to remove, or edit if you prefer, is:
kateschemearc, which is usually located in a folder like
$HOME/.config/ (the name of your .kde file may be .kde4 or something similar).
Remove that file and all default colour schemes are restored.