Dont know if this was what you were asking for, Jim, but to create objects that seems to be painted with different colors, you can do this:
Turn on "Color by layer", face style "Hidden line" and line color "By material" in your standard crayon style, and get a result like the one attached. As far as I know, this works with all styles, and I have this as my default style when working on floor plans and such (though not crayon style ), and each type of object in a separate layer (chairs in one, tables in another and so on).
// Olle
[image: 1rp5_Crayon.png]