I don't think gold-tone watches were ever really out - I consider yellow gold a classic, but I do think the larger boyfriend size yellow golds are very popular right now. I'm actually thinking about a large gold-tone watch for myself. Personally I prefer yellow gold as that's what my wedding set is made of, and the tone looks nicer on my skin, but I do wear some silver, stainless and two-tone as well.
I think rose gold is also a classic, but it is definitely trending right now, along with ceramic watches.