Gold Brahma chicks

Morning everyone!
My broody Barnevelder has finally hatched my Gold Brahma eggs - 5 out of 6 were fertile, so this morning I was met by 5 little fluffy bundles, peeking out from under Mum. I know photos are compulsory, but Mum goes absolutely spare if I go anywhere near them and I'm afraid at the moment to disturb her too much in case she hurts one trying to get to me.
i have a question - I've looked at photos of Gold Brahma chicks and all but one fits the colouring, but the one that doesn't has no markings at all and is a plain dark buff colour but is the same size and shape as the rest (sorry no piccies). Could this be a different  breed colouring, if so any ideas? I don't mind as sometimes it is interesting to see what develops

I've just managed to find buff columbian chicks and you may be right.

Thanks JaK!