I see that you are new. We don't answer questions here. We just call the questioner stupid, then tell them to quit driving Uber, lol.It looks like Noone has answered this question. Here it is:
1) Uber Partner App
2) Account
3) Help
4) Account
5) Managing a Vehicle
6) Update Vehicle Color
7) Add Color and Photo
8) Submit
It takes them a few days to verify photo and update
But seriously. Thanks, I was trying to figure that out also