Script Summary: Fixes colors of the xkcd logo
If you have good eyes and a monitor that can can display a decent range of colors, you can see the xkcd logo has a faint yellow tinge to it. If you very good eyes, you may have also noticed the desaturated pixels around the "xkcd" letters. If you have superhuman eyesight, you may have noticed that the faded background comic wasn't using grayscale. This script fixes all those things.
