Polaris is a red giant star.
red
The main star of the Polaris system is yellow and has a surface temperature of 6015 K.
B-V pwned
Radiative
Arcturus is orange in color, and has a mass of 2.188E30 kg. Vega has an apparent magnitude of 0.03, a white color, and the size is unknown. Comments. That answer does not fully answer the question. For example there's nothing about Polaris.
The main star in the Polaris system, Polaris Aa, is a yellow super-giant, with a radius which is 46 +/- 3 times that of the sun. Its apparent magnitude is 1.98 but it is a Cepheid variable.
Deep space, or any "space", has no color...it is a vacuum, devoid of any light.
The pole star (Polaris) is not constant. The Earth's precession creates a continually varying point in space where the North Pole points. Right now, it is within a degree of Polaris, but there is a 26,000 year period where Polaris will not always be the pole star.
Polaris is the star nearest to the imaginary extension of the North pole into space
They can be any color.
black