I got my hair colored last Sunday hoping it would be a nice dark-ish brown with just a hint of red, well it turned out blacky red, I don't like it

and I don't know what to do about it! I talked to the lady that did it and she said it should fade. I normally wash my hair once a week and I've almost been washing it every day to speed up the fading process. It's only been a week but I'm anxious to lighten it up.....any natural home remedies anyone can recommend that has actually worked? My wedding is 9-23-12 so I don't have too much time! My bridal shower is next weekend, I hope I don't scare my guests. Haha
It doesn't look awful, it's just not at a color that I normally have and that's appropriate for me for my wedding...so I hope it will lighten up to something I like or I'll have to go to a salon to have it fixed. I want to wait it out a bit before I do that though, see how it goes with washing it ..
Thanks!