I have several FED IVs and like them all,I suspect that you'll end up with more.If I was to make a choice to contrast with fawn,I'd suggest carbon gray.I have been enjoying wearing my Heritage Fawn Fed IV to work. I think it looks good with blue suits but not so good with grey.
Obviously that means I need a second Fed IV, right??
But what colour? I don't think moonstone would look great with grey suits. How would brown look with grey?