I love colours, and the fun of mix-n-matching, but sometimes I like to fall safely back to wearing coordinating colours from top to toe, the simple reason being that it makes me look generally more put together and sophisticated than I usually am.
An all-over camel outfit is a softer and warmer way to pull of a top to toe look than black/grey. I went for a bit of a contrast however, just to add a bit of fun and shape to the look. But with the rest of the outfit being in one colour, pretty much any colour top would work fine here. A camel jumper, a silk white shirt, a black polo neck… the choice is all yours, and wide.