got the same problem, did you find a solution to this? i couldnt find anything googling it.
Edit:
actually i found out myself. you gotta delete the filter extension mod. some other mod installed it with ckan
my ksp looks a bit gray aswell but not as bad as yours.
and yes so far it also works on my 12.0 install. maybe a few bugs to come but its not totally broken or anything.
I have a Problem. i cant use cannons und guns anymore becaue the ammo boxes are sort of bugged, the ammo does not show in the "fuel tab". im sure i installed everything right, is this a known problem? did i do something wrong?