Buff colombian D'Uccles have that color pattern and feathered legs. I believe there are also buff colombian Cochins. And it would not surprise me if Booted Bantams had that color pattern as well in the works. It is a not currently an accepted color in either breed but it is a variety that is in the works. I agree it is probably a buff Brahma but we need to see some more pics to be positive. When folks ask for opinions on here, we should be very cautious about quickly categorizing things as being only applicable to one breed when it can apply to others (i.e. 5 toes means a bird is a Silkie or Silkie cross when there are other breeds out there with 5 toes). The best way to determine a bird's breed (or any animal for that matter) is to look at the whole picture rather than keying in on one or two characteristics.
In this case, pea comb, feathered legs, no vulture hocks, no beard/muffs, and buff colombian pattern would be a buff Brahma. Single comb, feathered legs, vulture hocks, beard/muffs, and buff colombian pattern would be buff colombian D'Uccle.
In this case, pea comb, feathered legs, no vulture hocks, no beard/muffs, and buff colombian pattern would be a buff Brahma. Single comb, feathered legs, vulture hocks, beard/muffs, and buff colombian pattern would be buff colombian D'Uccle.