Join Date: Jul 2012
Location: Sterling, Virginia, USA
If she tests Ee, then your best chance for a palomino foal would be to breed to a cremello stallion, as that would be a chestnut horse with two cream genes. Here's a looksie.
--- e -- e -------- Cr -- Cr
E - Ee - Ee ---- n - nCr - nCr
E - ee - ee ---- n - nCr - nCr
A cremello stallion (top sets of alleles, assuming he's not hiding agouti) plus your black mare, assuming she's Ee (side set of alleles) could produce:
50% chance of Ee nCr, smoky black.
50% chance of ee nCr, palomino
If the stallion is hiding agouti, you have a 25% chance of the above foal colors plus 25% each of buckskin or brownskin.
If she is Ee, a black mare can produce a red/chestnut roan by being paired with a red-based roan stallion (chestnut, palomino - best bets, there are others). Depending on other genes that could also result in blue/black or bay roans, and chestnut/black/bay solid foal (add dilutes for palomino stallion).
ʀ ɛ ɴ ř ,-------------
"Who rescued who?"
---------ċ ᴀ ʀ ʅ ʏ