I have been wondering for a while...?

Tan for hunter or jumper

Grey for dressage at lower levels

White for dressage at high levels

I have been warned that judges will look down on you if you wear white in dressage before you have "earned" them.

I've been told that for schooling shows it doesn't matter what you wear as long as you have a helmet and boots with heels.

At our schooling shows we have kids wearing pink and purple chaps who still win blue ribbons.

However our trainer believes in wearing the correct attire even for schooling shows and that would be tan breeches.

If it came down to you and one other rider tied for a place, the one with the more correct attire would probably get scored higher.

Unless you're showing dressage, white is out. Depending on the circuit, black may or may not be allowed at the lowest, unrated levels. For anything rated, its tan or the ever popular "puke green". Ask your trainer what would be most appropriate for the circuit you'll be showing.

I wouldn't wear black breeches to a hunter show. Its looks odd, especially if you're wearing a dark coat with it.

Hunter judges tend to be snobby and judgemental, they might write you off as a novice as soon as you enter the ring if you're wearing unorthodox breeches. :\

English judges are very picky. They wouldnt care much, but say you are tied with another person, but they have tan breeches, they will win. I'd get tan for shows.

If you are doing Hunter/Jumper, tan, if dressage I believe its white.