"Yellow fellow" is another term they used for mixed bloods. (I myself don't.) Aboriginal society makes distinctions which we whitefellas in the coastal zones fail to see. Nevertheless, in the interest of clarity, I shall now show you what Australian Aborigines look like.
And in case anyone objects to my use of the term, "blackfella", kindly note that they use it for themselves, and call us "whitefellas", a term which causes no offence. I regard these words as informal terms, like "paleface" and "redskin" - not derogatory, but more likely to be used in informal conversation than in formal essays. Nevertheless, someone was taken to task recently for using the familiar word, "Aborigines" on the ABC. It is getting harder and harder to keep up with political correctness. In any case, here is a series of photos of what Aborigines look like. Make sure you scan down to the end, to see the significance.