The Sun looks yellow from Earth because we see it through the atmosphere; in space the Sun looks rather white. Do A-, B- and O-type stars look blue from both their planet's atmospheres and outer space? Do red dwarfs look reddish even if you look at them from space (I mean close to them, in their own planetary system)?
This site shows the colours that stars would have if their intrinsic spectra were viewed. The simulations do not have any intervening atmosphere and assume that the star is bright enough that the physiological effects that mean colour vision doesn't work at low light levels can be ignored.
What stars look like through the atmospheres of their own planets would be entirely dependent on the atmosphere those planets had.