I hadn't really thought it through. Should I use a different neutral? Yes, my plan was to use the cream as the neutral. Is there a reason why I'd want to use a different neutral on the triangles? I'm not that great a visualizer. I did get the software in but have been too sick to get it going. I imagine once I do, I can play with it and see what effects using a different neutral for the blocks vs. triangles. Any hints or suggestions would be greatly appreciated.