I'm not sure what is meant by "color scheme" in this context. It seems to me that the way that term is used by laymen would make that an impossible assignment because of the infinite variety, but I'm sure I have that wrong! Anyway, what comes to mind is a values quilt, usually made with half square triangles, in mixtures of light, dark and medium. The emphasis is on bringing out a design by arranging the lighter and darker halves in various ways. If you google "values quilt" you'll get many examples.