List/Menu Help

I've been working on developing my first site on dreamweaver, and I had the idea of creating a roll down menu where people can choose the color schemes, for example one would be black backgorund with red text, orange background with blue text, etc. I've been trying by messing around with the code, but i can't seen to get my desired results. Would any of you know how to do this? I would rather not use buttons or have to link to separate pages to do this.