This is a post I began quite some time ago thinking it would be a quick and easy one, since it concerns a topic I know very well.

But — perhaps due to my own inability to be brief — it turned out to be more involved than expected. Maybe I just have a hard time leaving out all the details. In any event, I set it aside until I had more time.

Then I had an idea for making this post a bit more fun (at least for me). The problem was: I needed to build a theatre! You see, this post is about color and light.

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