being able to create envmaps on the fly in react is such a game changer, moving a couple of planes and circles here and there radically transforms the scene. rarely you see something that simple have that kind of an impact. 
the general idea is 1. pick a model, 2. set up a declarative environment, 3. fill it with plain threejs planes, circles, donuts — keylights, strips, fills. if you have a photography background all the better. when you're done you have a extremely performant good looking scene.
so turns out envmaps can be live, at little to no cost. things can animate and move in there. 🙃
another thing i learned, thanks to @mrdoob, you can ramp up colors which behaves like a power setting on a flashlight. this is awfully close to real light formers now.
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