Seriously, just put it up and people will prompt! Limiting your palette is one of the best things you can do, I think. If I have fewer choices I think it makes me think more about what I'm doing.
Speaking of, did you see this insanity that petite-madame did http://petite-madame.tumblr.com/post/82722188285/as-quickreaver-said-there-was-a-lack-of-sam-on-her It's drawn IN REVERSE! I can't imagine how she kept in straight in her head. Might have to try it though : ) x