Hey!

Ive bought Fallout 2 and Sanitarium during the special offers.

But both games have horrible video sequences. No correct colors, just epileptically color changes.

In game its ok, but not perfect.

How can I fix it?

Well you're already on the right path by creating two nearly identical topics about your problem.
I'm positive it'll be solved in no time.

I managed to do this to Fallout 2 once. I wish I can remember how - I THINK I had just had a crash and was trying different things. It MIGHT have been something to do with right clicking the shortcut created (Under Win 7) and NOT running it as an admin. So you want to make sure to be running it in Administrator Mode (check the box).

If you ARE running it as an admin, make sure you don't have any of the options check under shortcut properties (the Compatibility Tab).

No compatibility mode, no 256 colors, no 640X480 force. Damn I wish I could remember the details, because I know I altered a setting that CAUSED it to look like the way you are describing - it was a very simple toggle. So I'm hoping you can untoggle that and be all set.