Thanks. But I assumed that since matref uses n2DL (would have been the same with nSDL), he needs to put an ugly color as a background to set it as the transparency color, so either I put myself an ugly color (you would have complained even more ) or I put something else as a background, whether real transparency or white, it doesn't matter anyway because matref will have to open an image editor to put his ugly color. Plus, I don't know which ugly color he used for the sprites he already has and I thought he might want to use the same so I let the background white.