Quote Originally Posted by Speed-X View Post
Do you have the tolerance turned to 0? This will make sure that the magic wand only selects the one exact specific color you asked it to. Also, don't forget to turn off anti-aliasing!
Also may want it either Contiguous or Global depending on what you're doing. Contiguous only selects that immediate cluster of pixels, while Global (or some name akin to that) selects all pixels of a certain color.

Just when you use stuff like PS for pixels, make sure that you have all of the anti-aliasing things off. ^^
It's possible that they may be turned on, but I usually shut them off and still get the same issues. Background eraser works perfectly for me though.