Just do a punnet square for the different alleles. I don't know if you can do that or not with T's but you can with reptiles. You have to find out which is dominant and which is the recessive gene for RCF and TCF. Other than that you can wait it out.
EDIT: I'm sorry you can't figure out what your T is just the probability that it is something. I was thinking wrong.
I've always heard that the color phases are NOT GENETIC. As in, regardless of whether both parents are RCF or whatever other possible combination you have, rosea eggsacs are random. They might all grow up to be "normal" (ie, pink carapace), "muddy" (brownish carapace), "red," or some mixture of two or three of the above.