Neutral colours suit every person - whatever colour skin, whatever colour eyes. But it soudns like purple or green might go good as an eyeshadow on people with blue eyes and fair skin.
blue green and pink
Grey, silver, electric blue (not hyacinth or other purpley-blue)
use an eyeliner blue or black and an eyeshadow depending on the colour of your eyes, med. gray will work wonders for most eyes.
Blue eyes tend to look best with silver glitter eyeshadow. Try Too Faced Lock Down Ultimate Creaseless Cream Eyeshadow ($19 each) and when you put it on you have to keep your eyes closed for like a minute so it doesn't create creases.
if there mutts
blue
It depends on your opinion. If you think blue is the best colour in the world then that's your view, and no one can change it (unless you do). Not everyone in the world thinks blue is the best colour because they might have a different opinion on what is the best colour to them. Best colour often refers to an individual or group, not the entire world's population.
the colour if your eyeshadow will depend on the colour of your eyes, so eg: a smoky grey if your eyes are blue or hazel, a light brown for brown or a grayish green is also very flattering, you will have to experiment to see.
Either silver or a light blue.
Blue
blue.Because blue is a very light colour
blue