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It can also absorb more heat :)
A black object radiates more heat than a shiny one, Physics 101
Someone will run with a simple statement like that and go with it literally.If I wrap the silver aluminum cylinders on my EV with a layer of black cardboard, it will not run cooler.Just the same. If I spray a heavy layer of black tar on the cylinders, it will not run cooler.It has to be a THIN layer of the PROPER TYPE of black paint to not make matters worse.
Is it inches from flames with some paint on it?