When I play videos on Youtube in minimum screen or middle-sized, videos are normal. However when I play them in fullscreen the video is oversaturated (has too much contrast and light).
The same happens on any video online, not just YouTube.
It also happens when I play any video with Windows Media Player at any size. When I play movies with other players like MPC and VLC, its fine. I think some settings for online playing and Media Player are screwed up. Any ideas?