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I post the question here several minutes ago.

In theory, additive mixing Red color and Green color produces Yellow color.

In my mental model, additive mixing opaque Red and opaque Green will produce opaque Yellow.

But the following attempt, I got a result that is different from my mental model.

WHY?

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closed as off topic by Mark Eichenlaub, space_cadet, mbq Jan 1 '11 at 20:40

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Not a physics question. If you rephrase to ask about the physical different between adding light and adding pigments, it would be good. At the moment, you're asking about the output of computer software. The first place you asked the question was the right one. –  Mark Eichenlaub Jan 1 '11 at 20:09

1 Answer 1

You've darkened the center color more, I think that's the problem. Try lightening it somewhat and I think you'll have the right color.

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