I love this idea..in fact I happened to mention this to Chasing months back saying wouldn't it be nice to have a pink Guild house. You can imagine his reaction
But it would make for a colourful plot. At present I've tried to fit in as many trees/bushes and flowers to add colour to very drab looking buildings. Silos can look very ugly so have tried to be creative on one of my plots that is mainly full of them by adding ponds and trees again.