Yes, your pony is definitely brown silver, not bay silver. With Bodi, if you seen him in person you can clearly see he has cream tones to his body. Something a silver dapple of any color will not have. He has many similarities to some of them as far as shade goes, particularly since he has darkened down. Sometimes he even looks like a few of them. Even though not tested specifically for silver, it is genetically very very unlikely that he is. Regardless even if he did carry silver, silver cannot express on a red base, and being palomino that is exactly the base that he is.