The entire process of design is filled with refinement: make a variety of options (thumbnails, color palettes, etc.) - and choose the best one. What if you could automate some of that? This video shows a technique to multiply your color roughs when making a character design in order to dramatically increase the total output. It's a bit messy, but you'll save a ton of time. If you want to see a similar process with thumbnails, make sure to watch this older Ctrl+Paint video.