To me, buffs are any number of turkeys that have two red genes and so end up looking reddish overall. According to Porter's, the jersey buff is black-based with two red genes. Regal reds are black-winged based with two red genes. Bourbon reds are bronze based with two red genes, and so I guess would fall within my definition of a buff. Although I have not yet produced one, a Narragansett with two red genes would likely look mostly red and so be a form of a buff.
The red hen is not too light to be a bourbpn red. they get darker as they get older. The tail and primaries should remain white it its a bourbon red. If it is some other buff colored (red) turkey, the wings and tail may be reddish as well.
But to address your original question, they all look like hens so far.