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Star actually have colors
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It would be much more surprising if they didn't have any colour. How would that even work?
I expected them to be white and white is a non color, as far as I know.
White is just a mix of all the colours.
(Mr.) ROY G. BIV was how I was taught to remember it
Talking about stars and light, white is the opposite of a non-color. It's all the colors all at once. Black is the only nob-color. Our sun isn't actually white, it emits a broad spectrum of light which appears white to our eyes, it actually emits more green to blue-green light than anything else. Look-up the sun's spectrum or the main sequence of stars and you'll see what I mean.
Black is no color. Think a black hole, it doesn't let any light escape.