Fall Colors?

I`m having my wedding in september but I cant come up with any colors that I like and go with the scenery. Our reception is at a golf club house (very pretty) but there is also a river a ways down with very large tree`s it`s hard to tell weather the colors will have changed on the leaves by then (I live in a semi ered desert) White has to be one and I wanted silver and a dark almost black blueish color but the darkest to be found is navy are there any other good tri colors involving white?