No problemo! These guys have everything you need and you can order online. I'm using Oomo 25 fast setting slicone for molds and ClearFlex 325 (I think) fast setting plastic for the castings. You can get the dye there as well, the site itself is kind of a pain to navigate and you might have to dig a bit for the dye's but it's all there somewhere.

Word of advice... even though it doesn't smell... be in a well ventilated area and use rubber gloves...