They all look great. Though I have a Balmoral in each of those colors except the dark khaki, I find that I wear either a black one or faun one (like your desert tan) on most occasions. If I had a dark khaki one, I suspect that would be my most often "go to" bonnet unless whatever I was wearing called for a dark one, then back to black! In the end, I don't think you could really go wrong with any of them though. :-)