Maybe you haven't heard of playsilks before, but they are a different way to dress up. The dress isn't already make, you create it with silk. I'd only seen places to buy it before (in the range of $17 for ONE), so when I saw something on how to dye them last week, including a link on where to buy the plain silk, I was all over it.
I used the method described here, but I suggest using more water in each jar (gives more uniform color - the first few I ended up dyeing more because there were splotches without as much color).
Kool-Aid color chart to get you started, I saw this site where a different lady talks about the colors she uses for dyeing yarn. Some other color info just to get you thinking. Hard to totally rely on everyone's color "recipes," because part of it is based on how much fabric you're dyeing at a time and such.
Buy the silk at Dharma Trading Co. If you buy more than 1 yard of each it comes in a strip of however many yards you bought. I loved that - I cut different widths so I actually got more than I thought I would.
Just saw another idea/method. It says to iron them to make them shiny. I tried it with one and didn't notice a difference.