Well, Snake River has me going in the right direction, can not thank you enough Bob.

Now I have a few questions:
Basic colors to start off, I am thinking the following:
Black, white, red, orange, pink, purple, chart and a root beer/motor oil color
How much of each? Think 4 ounce because of the lower cost and so it will last a while. Not sure how much 4 ounces will dye but should be a lot more than a couple gallons.

2 colors: can you pour one color in another mold, let it cool, insert it into part of the other mold and inject another color and have them stick together properly?

How do you know how much to mix up for filling the molds you are working on? Trial and error and best guess?

Probably lots more questions later but that's enough for now. I don't have anything yet so asking too much too early aint gonna do me any goof.