Washed-out colours/bad lighting?

[Zuellni]

Try adjusting the colour, contrast and brightness options in the TV or video card settings. I know my TV has this annoying "feature" I can't turn off where it dims the picture when there's a lot of black and brightens when there are whites to make black look darker. Also check if you're using a preset on your TV. I find some of those "Movie/Cinema" modes on my TV make things look dull and dark as well.