Brand new to MythDora and Linux so be gentle! Color when viewing TV shows appears to be almost black and white, plus oversaturated. Used the function here (G-Ding.TV) but didn't find anything to help.
At times the colours seem normal (when I'm at the Backend?); at other times appears to be missing red. One set of menus has blue along the edges, a green blob with a black spot. The green with black thing reminds me of a fried egg. The black spot has sharp boarders. When I'm viewing some of the menu sets the black obliterates the help text. (The help text also doesn't fit -- in some the bottom lines are cut off).
In other screens the colours appear to be normal.
Video card is nVidia NV6. One of the help posts mentioned F/^F and G/^G. G works (and I get some colour in the popup); F does not. Drivers are selected for the nForce group.