How to fill-in a diamond without PAINT

[SierraKen]

LOL B+ you are almost reading my mind. In my Explorer game I'm making, with the map scrolling, I've been working on the cave map and the other day I added TONS of diamonds just as decorations and earlier today I made them random colors. I also made a cool looking dragon (a few of the same ones). I'm getting closer to finishing the game. It will probably just have 2 maps and won't be too technical.