Semi custom zero sprites MM2 style

[GrooveMan.exe]

It's exactly what it is. A colour that will be made invisible when used. It's why there isn't a block of solid colour around a sprite when it's used in a game.

So It's 4 colours, one of which will be made made transparent. In the Megaman games, his face uses a flesh tone that would brink the image over the colour limit. So what they did was make MM's face a separate sprite, and lay it on top.