While we know some basics about genetic coat colors and what gene’s are located where, we don’t actually know where all the genes are just yet. For instance, when you run an Embark test, a brindle dog and a black dog will often come back with the same color result as they haven’t been able to identify where the brindle color modifier/gene is. We know through inheritance patterns that brindle is less dominant than solid back but more dominant than fawn so we can predict that certain pairings will have certain colored offspring.
When we started our Embark journey, we thought we would be able to tell just what color our dogs carried as a masked gene. What I have learned is that Kenai, Myst, Grizz, and Sunny all came back at the K-locus as KBky. Myst is black while the other 3 are brindle. We know from his lineage that Kenai carries a fawn gene secondarily but we don't know what Myst carries. As a result, we actually do not know what Sunny or Grizz carries either. Only time shall tell us what the likely result is with Sunny’s planned upcoming litter if our guess is accurate.
For more info about the Embark specific color traits read this: https://embarkvet.com/resources/dog-breeders/science-corner-coat-color-genetics-101/