enable parameters and add some color options

[idflood]

The title says it all. There are still some more potential color parameters to add but it's a beginning.

I'm starting to try to implement the timeline in a project. I've just started and hope I will be able to bend timeline.js enough to fit in. Here is the project link: https://github.com/idflood/ThreeNodes.js

A little unrelated question, what's the planned license?