“The only thing we can perceive are our perceptions. In other words, consciousness is the matrix upon which the cosmos is apprehended. Color, sound, temperature, and the like exist only as perceptions in our head, not as absolute essences. In the broadest sense, we cannot be sure of an outside universe at all.”
So, for art reasons I looked at the temperature and colours of stars. The brightest and hottest stars are blue and I had to think about Tonys arc reactor.