I make my living doing this so I cant tell all but I might help out a little.
First I realy doubt you can inject the paint into the plastic. It doesnt work like that.
No you can not buy one of my molds. It took many years of trial and error to work out the kinks. In the molds, not the baits.
I can tell you guys this. I have learned very little from other people when it comes to making baits, If everything you learn is from sombody else than how can you design something better? I have experimented so much that I have actualy figured a couple things out. When I started, 8 out of 10 experiments failed. now most of them work. I see so many guys asking basic questions that would only take a minute to figure out by trying to. This site is absolutly the best there is for learning how to make baits but I see a ton of questions like Can I do this? or what will happen if I do this? well my answer would be try it and see. Of course sometimes its a matter of saving money or saftey but usualy its not. You will learn so much more by experimenting on your own AND using the info you get here. Than just by asking. The "panit" is deadly stuff and you need to be well ventilated. It is also a pain to use. It cloggs brushes quickly and is tempramental. BUT.... you can do some cool stuff with it. Get some, play with it, and learn.