I had thought, when I first got tricolours from a breeder in the NYC area, that they were new and rare. By now, I've found that they have been around for decades in some form or another, and are available in distant parts of the world. It is not unlikely to think that they'd be available from a breeder in the southern California area. A guy on the Little Squeaks forum turns out to have them and didn't know it until I told him that the splashed type of marking is based on the tricolour factor. He's in Michigan, I think.
I'd be happy to share the wealth with anyone who was willing to come and get them in person. I offered some young tris to a guy that wanted a couple of does, but he wasn't interested. He got a couple of my satin fawn does instead. Since he waaasn't going to breed meeces, it doesn't make any difference, I guess. I love to see more folks breeding tris as it would help us all figure out exactly what's going on with the tri factor.
Truth be told, I'm beginning to suspect that there will never be any way to predict the outcome of pairings with any high degree of accuracy because of what seems to me to be a built in randomizing element, or multiple factors that behave differently depending on several other factors that may be genetic or the product of environment or diet.