> I'm trying to make three hemispheres with different colors, and have
> their overlap be a mixed color.

That's pretty hard to do using textures, as there's not really any way to
make the colour values add together (which is what I think you're after). I
suggest you use 3 different coloured light sources (red green and blue)
shining on a white sphere, that way the colours add up nicely.

'course, that'll mean anything else in the scene will get lit that way
too... :(

--
Tek
http://www.evilsuperbrain.com

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