Thanks for answering. Do you also know why stars only look white or yellowish since that can be any color? Why don’t we see green ones?
Stars are red too. I think you will find that stars generally output the entire range of colours, it's just that bright stars tend to output far more radiation which is in the yellow or white range. White is of course, all the colours at once.
The way our eyes work combines with the theoretical black body distribution of frequencies to create a 1-dimensional curve (conventionally parametrized by temperature, don'cha know) in UV or LAB or CIE color space which goes from red through orange and yellow to near white and finally bluish white for spectral distributions which peak in the far ultraviolet. Both stars and hot metals are close to black bodies and so color is vital to astronomy and traditional metallurgic recipes, as documented in those Japanese sword-making documentaries. The sun looks very close to white in space, but from the Earth's surface it looks yellow at zenith and red at horizon due to scattering of high frequencies by the atmosphere. This scattered light is also why the sky is blue.
I would add that the Sun is an average star and that our eyes are adapted to register the wavelengths that are most abundant and strong on the surface of the Earth.
Having dabbled in amateur astronomy for oh... four decades or so, I assure you the unaided eye can learn to distinguish star colors. It helps to be far from city lights. It is quite subtle and helps to have a lot of practice.
