I don't believe this will be possible.
I am using Premiere Pro CC and I too felt the need to do the same thing. Haven't been able to figure out an automatic way of doing this.
As of now, the naive workaround that I am using is to select the individual clips in the timeline and manually change the label colors, according to the angle I am using. Painful yes. But if I do this after I've locked down the edit, it takes about 10-15mins.
Bump. I think this would be hugely useful. Wondering if there's been any headway in development of this feature?
I've seen nothing mentioned by Adobe.
Have you tested it on 2015.4?