Without better pictures there is no way of telling what your boa is. From those pictures it does not look hypomelanistic, but that might simply be due to the poor quality pictures. Additionally, determining the hypo lineage will be next to impossible without a known lineage for your specific animal. If hypo, it is most likely salmon, but sadly you have no firm way of telling. If you want to know as much as you can about an animal, buy from an established, respected breeder. They will be able to tell you everything you want to know.
Warren
I bought her from wild world exotics as a hypo boa het albhino i payed $200 for her if that helps but that was the only info I got on her I only keep ball pythons and thought I'd try a hand at boas as I have always liked the look of them