I found a company on ebay that sells the outer shell, but now I need to find the lighting that goes behind it.
You can make your own..... Much cheaper than buying them. Find a Stage Lighting supplier on the internet and buy colour gels (thin coloured plastic, heat resistant, flexible, sheeting.) This stuff is quite cheap and comes in virtually any colour you can think of.
Then you need a cheap, low speed motor and gearbox to drive it. Lots of places on the internet have these.
Make a frame to hold the lighting gel, and that's all there is to it. You can make it up as a colour wheel or as a rotating tube.
The DIY method is more fun than buying the stuff and probably with better results.
Best Regards,
Julian (Fozzy The Bear)