I think it's a really, really pale green or something. :) But then, I, my best person, and my groomsman were all wearing kilts at my wedding. With different tartans. VERY different (fortunately, none of them were MacLoud). And Mrs. MP wore a rather elegant semi-Victorian white dress, which goes with everything.
We weren't too concerned with the 'color coodination' thing, but as I recall her Matron of Honor and Bridal attendants wore burgundy. I think. I wasn't paying too much attention to them at the time. :)