Browser Video/desktop Icons Shaded?

When I came home from work the other day, the display on my computer was screwwed up. The first thing I noticed was that the text for the icons on my desktop was off-color. Instead of being the usual icons and black text, everything looked strangely shaded with blue and pink... They all still function properly, but look strange. Also the start menu at the bottom and all the selections under the start menu are the same way. Second; when I open Firefox and try to view videos, the video is covered in red lines and boxes, and is unviewable. The video is still playing, but so distorted that I can't make it out. i ran windows troubleshooting, and have been searching the internet for hours now to find a solution, but have had no luck. The only changes I have made to the computer that I can think of, was to delete some of the unnecessary folders in the My Documents folder. I didn't see anything that would have caused these issues.