The bottom three are 50%-25%-25%... The first one is a 70%-20%-10% and It looks just about like the other ones "percentage wise". It's a bit of a crap shoot if your trying to get exactly what you envision. That said, I haven't been disappointed with how any of them turned out.

1) gray,white,black
2) dark gray,tan,black
3) med. tan, black,white
4) black,dark purple,white

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