I knew this from in the 70's and it appears that he was socialized that way. But I was very surprised to come across an article in the Ebony or Right On magazine can't remember which, which stated that Elvis was in a cart mart and he bought a black lady a brand new car then left. So it would appear that he regretted his growing up attitude and I think he later worked with black musicians. The paradoxical thing about it is that the writer of Elvis's songs was a black man, who sent Elvis audios of the songs. I have heard one and it is incredible how they both sounded exactly alike. So yes he was but seemed to have change at some time during his career.