Upon investigation into the material contents of the crinoline, (Read: I did online research, called the shop I bought my dress from, and then FINALLY called my dress designer's world headquarters) I found that it is Poly-tulle. It is made of Polyester.
Now folks, no mere mortal can dye polyester fabric. However, I do not take kindly to the idea of a white crinoline I could have just left attached to the damn dress!
So I did some more research into what WOULD dye polyester. Apparently there is a poylester dye that comes in its very own packet and everything. It is called iDye Poly and although it comes in limited colors, it comes in yellow and it works! Shawnie did most of the work and I stood by with my nervously bitten lip.