Below you will find some elements that can simplify your choice.
1) If you are looking for a lot of privacy, choose a colour that is as light as possible. With a light colour (Chalk or Bone) it is more difficult to look inside than with a dark colour.
2) If you are looking for a lot of sun protection, choose a light colour. After all, it reflects most of the solar energy.
3) If you are looking for a nice and sharp view to the outside (or a nearby room), then choose a dark color. Coal (black) gives you the most visual contact with the outside world.
4) If you are looking for light reduction to reduce annoying light reflections in your computer screen, choose a dark color. These absorb more light than the light colours.