Movement and more colour

OK. I've added the ability to move about and change your viewport. Just point a controller in the direction you want to go and pull the trigger - kind of like a gentile Iron Man.

I've tweaked the colour formula so there's more variation and I've altered the initial starting configuration.

Still no way for users to change the parameters but I want to get a feel for what's a good range of options before I start down that path.