It's definitely ready to use, but I can't bring myself to do it. lol I have a brother visiting for awhile, so I'll have him test it out for me. Still smells like play doh to me, but if it changes when water hits it like Jen mentioned, I'll let you know. As for color, I put TD in it, but it's pretty white (my recipe is usually more on the yellowish side by itself), so I'm going to say it probably didn't discolor very much - if at all. I still haven't soaped the toffee one yet. May do that in a few days.