Hello, So i'm trying to use some tilesets i've downloaded from various sites. They come in png but i change em to bmp but the background colour always appears on the map. As in it doesn't mask the image into the ground colour. I want to be able to use the tile over the ground but not have the black around the edges. I've tried changing the background colour of the tileset to the same as the default tilesets but that doesnt seem to work. How do i get the background colour not to recognize when masking etc. Is this making any sense? Any help would be appreciated. Cheers