Hmm, lets see,
I create a matrix from an elevation bitmap, then I use a colored bitmap of the same map to color the matrix, then I want to use another bitmap to give some detail to each tile, one that works with transparencies or alpha channels or whatever (im learning this technical stuff

), the result should be a matrix with lots of different colored tiles (from the colored map) and a texture given to each tile by a grey scale bitmap. The texture will be the same for each tile since it comes from the same bitmap, but each tile has a base color taken from the colored bitmap (colored bitmap is same size as elevation bitmap, so 1 pixel of the colored bitmap will be one tile, if I dont have another texture to add some detail, the whole tile would have the same color, ugly, but the texture cant cover the tile's base color, it must have transparencies). I dont know if this works, but I saw something similiar in a program called Total Terrain, though its not made in DB.