Just an idea, IMO The Soft Plastic Cookbook on this site, is more or less, a mix of already mixed colors, mostly resulting in shades of browns. Also you are f--cked, if you don't have acces to LC colors.
Therefore I would suggest using the complementary colors, as the base for an alternative Soft Plastic Cookbook. This would also ease people, with larger productions in mind, becase they can buy, like 6 cans of plastisol textile print colors, instead of 50 already mixed LC ones.
Just an example:
Chartreuse; 4 parts yellow, one part green.