Here's the latest on the Ghia.
I dropped a medium grey as a base coat and just started on the wheels. You can see my channels on the right. Each color is in a separate channels. I use the selection layer to make selections (lol) and then fill the selection on the appropriate channel. Basically I make a coloring book and then limit myself to 8 or so crayons (the channels)
here's a close up with the selection channel on:
-Lemorris