What is your discipline? I think that makes a difference. For western, I love bright Navajo prints on lighter colored horses. I just recently saw a wool blanket that was cream colored with tan leathers and the most beautiful hot pink/orange/turquoise diamond pattern on the back... Good lordy, I wanted it so bad.
If you are riding english, I love all the classics like white, black, or grey. I love purple and navy, too.
"A rider who would trade partnership for obedience
will have to settle for neither."