As I was dying while doing all the swirly bits, I kept thinking how damn pretty the marble looks. I'm glad it turned out so well, and it really was a short session, too.
Dying? That sounds dreadfully boring. Dye must get everywhere and then on your clothes and you end up looking like a dirty hippie. 
Yeah, imagine falling into one of those pools.
That would be interesting. And itchy. Remember that the rainbows are so spicy even Pinkie Pie, who loves hot sauce on cupcakes of all things, couldn't stand it. The capsaicin levels must be at the police-grade pepper spray level.
Seriously! 