With Orange Goo they try to combine the best of two worlds: Google’s very simple and powerful approach with beautiful random visual backgrounds and sexy movable interface. Orange Goo is still in the beta stages so they are ironing out the bugs one by one and making general improvements.
They are planning some custom settings such as selectable background themes in the near future. Google is King. Everybody knows that. But for some people, the default Google page might be a bit boring. Orange Goo makes Google pretty, simple as that. 
