Ibook display stuck in "negative" looking mode!

[Lori4242]

So, my cat jumped on my keyboard and the images now are in reverse, like a negative. All of them! black background, white keys, no colors.
Must have hit some interesting key combo, but no idea what!
Any ideas out there?!
Lori

[MattyK]

It's a tricky one
okay here it is
fn(I think)+CTRL+ALT+COMMAND(:apple:) and 8, at the same time, it will be fixed.
BAM.

[bartelby]

yep CRTL +ALT + COMMAND (:apple:) + 8