So I'm attempting to have a multi-layer map for a TBS game that draws terrain, then draws opaque tiles over it so that the individual squares are visible. So that the black edges of the squares are visible but not the tile itself, I changed the color of the tile from gray to transparent. When the code runs to color the transparent tiles, however, the tiles remain transparent. I've gone back to making the tiles gray so that they color properly, but even when turning the opacity way down the terrain looks very washed. What could I do to resolve this issue?