try setting the display to 16 bit color
right click the desktop on an empty spot click the bottom entry on the menu
find where it says color quality choose 16 bit
(i have had green go out when in 32bpp)
do not use 8 bit it will look very bad
also some video drivers you can turn color chanels off
check for any kind of manufacture specsific control panel for you video card
and make sure RED is on