If you'd thought about it (and let's be honest, who had) you might well have assumed that the chemical toilet collection units that have appeared on many Christchurch streets in recent months only came in functional black. But someone, somewhere, must have thought that we deserved a bit of colour therapy, so every so often you'll see one decked out in a more delicate, fresher-sounding hue: Mist Green. Which just goes to show, when you're pooing in a bucket, it's the little things that count.