Is it possible to invert screen colors in Raspbian at all?
I've tried 'xcalib -i -a' but no joy. I've the libxxf86vm-dev package which seems necessary for xcalib to work installed, btw
Is there a way?
Note, CCM is done via config.txt, palette requires sending data to a mailbox - see here https://github.com/JamesH65/setgamma/bl ... setgamma.c