There are three aspects of a ragdoll you’re likely to here mentioned:
Every kitten can be visually assessed and labeled. Sometimes, we breeders are wrong. We might call a kitten chocolate when she is actually seal, or blue when she’s likely chocolate. It’s tricky. If the breeder has color-tested the kitten using UC Davis or MyCatScan, he can be more accurate in labeling the offspring.
Here, we have a chocolate, which is a lighter version of the seal (black) ragdoll cat. She has points, meaning, the tail, the paws, and the ears are darker in comparison to her body. The pointed gene is also the quality which normally produces a blue eye. However, a mink will yield an aqua to green eye.
Sepias are produced when a mink queen and mink king mate and beget a sepia kitten. Almost all minks have aqua to green eyes, but they can retain their blue eyes. (Brynn is an example of that exception.)
What is a sepia? Sepia is an “extra shot of color.” I’m going to lean on Maxine Stiles for a good working definition: “Phenotypically [the C gene typically responsible for the points] is characterized by the same color dilution as with the Cs gene. However, there is not as profound a sensitivity to skin temperature and therefore the body coat color is darker and much closer to that of the points.” The sepia/mink is darker than her traditional counterpart. Her points will still be visible, but her body color will be darker. Her coat will also be ultra soft, from my experience. When you hear “mink,” you think thick/dense fur. I encourage you to consider sepia as soft/dense. I may not speak for all sepia ragdolls as I have only my own experience, but what you receive from my sepia offspring will be soft and dense fur.