Well, I've been using GIMP Portable for a very long time, for sprites and backgrounds and all that, now it's doing this really weird thing where the only colors that will work are the colors that were in the image in the first place. I try using black (or any other color for that matter) the color indication thing changes to the correct color, but when I try to use it on the image it just comes out as either brown, grey, or red. (These are the colors that were already in the image.) Help?