Not only are stars dots, but quite often they are coloured dots
the colour is usually subtle, but not always. If you look at Betelgeuse or Arcturus for example they are distinctly orange, Rigel and Spica have quite a blue hue to them. The colour indicates their temperature. There are some weird stars called carbon stars that can be quite red...R Leporis (Hind's Crimson Star) is a good example of these.
Then there are double and multiple stars as the guys above mentioned...and just sometimes, the individual stars of these have different, contrasting colours....for example, Albireo where one is pale blue the other yellow...quite beautiful!
Then within open clusters you often get stars of different colours, visible in the same field of view...take a look at the Jewel Box for example.
All I'm trying to get across is...these dots can be quite interesting themselves as well as in the ways they manifest
