(But I am of the contingent that thinks that four colors makes a nice Zendo set. Really, I think you could reduce it to three colors without sacrificing any fun rules.)
--Z -- "And Aholibamah bare Jeush, and Jaalam, and Korah: these were the borogoves..." * Making a saint out of Reagan is sad. Making an idol out of Nixon ("If the President does it then it's legal") is contemptible.