I just found an amazing Facebook game (I know, I know-- but this isn't Farmville, I promise!) that might actually help you plan your wedding. It lets you design your own dresses, cakes, bouquets, and I think receptions, too. There are a TON of possibilities. Check it out!
http://www.facebook.com/apps/application.php?id=123665324320009It lets you make all these kind of things for different "clients," since you are the wedding planner in the game, but you can also just mess around for fun and make whatever you want and send to your friends and family.
I really think this could help a lot of you brides who want to experiment with what different color combinations look like, and have fun doing it! ALSO THE ART IS GORGEOUS!