Open pallette.bmp (I assume you already know where it is) in paint
Crop it to one pixel
Paste your sprite in
Save over your old sprite
Dragster wrote:
use the paintbucket tool. just use the same color as all the other CC sprites.
This will fail if you're not actually in pallette.
Also, make sure you always sprite off a renamed and/or moved copy of pallette.bmp, makes things a lot easier.