The point here isn't "You need to overlay dots of red and green to get brown". I know that little fact, and so do a lot of other people here, I'm willing to bet. The point we like is "OMG green dude! Maybe he's a cousin of Brainy or Martian Manhunter! *gigglesnort* [/not so secretly about twelve years old on the inside]". Although the reasoning behind old comics production people preferring primary colors and not liking using purple and gray and tan and such is quite interesting, thanks.