Re: youtube video problem
Right click the video, click settings, uncheck enable hardware acceleration. That should fix it, but you might have to do it again when you next go to youtube.
The other way to do it is to try to replace something in the flash library itself. I seem to remember that with the latest adobe update, this no longer worked, but I could be wrong, so it's worth trying.
If on 64 bit do
cd /usr/lib64/flashplug && perl -pi .bak -e 's/libvdpau/libxvdpau/g' libflashplayer.so
If on 32 bit change /usr/lib64 to /usr/lib
What you're doing is actually changing the libflashplayer shared object file so that it doesn't look for libvdpau, which is part of the problem. There's a few other threads about it here.
This is assuming that you mean by colors all wrong that it has a blue tint to most of it--it's always good to be specific in what is wrong, as it helps others help you.