Color - Pecking Order
Black is darker than white Black obscures white Black is over white Yellow is darker than white Yellow obscures Yellow is over white Yellow is lighter than black Black is darker than yellow Black obscures yellow Black is over yellow is over white Green obscures yellow Green is over yellow, is over white Black is over green, is over yellow, is over white. Black is an over-color relative to white. White is an under-color relative to black Green is an over-color relative to white Green is an under-color relative to black White is the lowest Black is the highest Which is the over-color / under-color - pure green, pure red, pure blue