Vehicle colors?

[Avagantamoz]

I keep seeing people driving around in the challenger with colors other then the default red. I managed to find the orange but I saw a pink and a black and am wondering how many colors are there and where do you get them? I want a white one but dunno if it exists, if it doesn't I would just take black. I figured time trials might unlock them but I did a few of those and still nothing.

[xcbox dmo]

You have to get gold on all the time trails to unlock the black challenger I believe. Check your Pursuit list. It should show you want to do to get some of the cars