Orange is the old Gold. Coloring technology was such that (mostly) flat orange was the best you were going to get to convey Kari's gold skin on regular paper. If you had some baxter print then you might get some extra shading. I don't think Tamaraneans are meant to be as yellow gold as the Sovereign race to which Ayesha and Adam Warlock belong in Marvel's GUARDIANS OF THE GALAXY. I've always thought their hue would skew more towards somewhere between yellow gold and tangy bronze.