I agree Poseidon. I do think there was a bit of a fight here, between sabino and splash. Sabino likes to cover the eyes with colour and splash doesn't, but drops colour off higher up on the face. Both seem to have had a bit of a win here.
Apart from sb1, I do know that several other types of sabino have been isolated and identified. However, they are not available to the public. Maybe one day.
And yes to the OP. We had a mis-identified colour result. We knew exactly what colours the stallion was, yet it came back as something we knew to be untrue. At our insistence, he company did redo it for us and it came back correctly.
I'm still not sure about blue eyes and sabino. I do know that hundreds - maybe thousands of Gypsies, who have one or two blue eyes and obviously or probably carry sabino. The same in Mini Horses.