Another participant in our little group project is Alex. Over the last few years he has worked on Chaos Marines, Deathwing, Necrons and now Tau.(You can see the move to competitive play in the armies)
With GW's Get Started army boxes being such a good deal, Alex bought into Tau. Taking inspiration from the Covenant in the Halo universe Alex has gone with a primary purple colour with blue light effects and they are looking good.