How do you go about learning how the SF genetics might breed? I just picked up a little blue doe from a chocolate dam and a black doe from a rew SF dam. Both have blue sire. What is my chances of getting color kits from them w a black buck. He does have some blues in his lineage. I'm just very curious on how to learn.
Blue, chocolate, and REW are all recessive colors, so for you to see them in a litter, both parents have to be carrying them.
Your blue doe has two copies of the dilute gene (dd), so she is guaranteed to pass dilute to her offspring. If the buck is also a dilute or is carrying dilute, she will have dilute colored babies (blue or possibly lilac; lilac being the dilute of chocolate). This rabbit's mother was a chocolate (bb), so she definitely got a chocolate gene from her mother; if bred to a buck that also carries chocolate, she can have chocolate babies.
Your black doe has one copy of REW from her mother (c) and one copy of dilute from her father (d). If bred to a buck carrying these genes, she could produce REW's and dilutes.
You said your buck has dilutes in his background. If he has a blue or lilac parent, then you know he has a dilute gene (d). If he has produced dilute offspring, you know he has a dilute gene. Otherwise, you can't be sure; he might or might not have inherited a dilute gene. Unless he also has a dilute gene, you could breed him to dilute does from now until the cows come home, and not produce dilute babies. As for chocolate and REW - well, just because there aren't any on his pedigree doesn't automatically mean he doesn't have a gene for them. If you knew he had a brother, or an aunt, or some other close relative that was, say, chocolate, you'd know that you at least had a good chance that he might have inherited chocolate. But, sometimes genes like that can lurk hidden for generations before just the right two rabbits get bred together and you wind up getting where-did-that-come-from colors in the nestbox.