I've just bought a pair of beautiful conker-brown knee-high boots which I love. However, now I'm getting cold feet about how much I'll wear them. I usually wear black boots with black tights and then skirts/dresses in a variety of colours - black, blue, red, etc. I'm now wondering how much the brown boots will go with and whether I should swap them for black - or should I just branch out a bit more and mix up the colours?