Your mare does not appear silver bay. She looks like a varnish appy. NdAppy will have to come and explain that, I will stick to splash genetics.
Assuming she and the sire are Ee Aa, they can produce:
Buckskin, palomino, smokey black, black, bay, or chestnut.
Then whether or not the foal inherits LP or PATN is not for me to begin to explain. Posted via Mobile Device