This debate is over like it or not. Both the IAF and Army will have their own attack helo fleets made up of LCHs, Rudras and Apaches.
22 Apaches for IAF and 39 for the army.
+ the Apache and Chinook look AMAZING in Tipnis grey IMHO
For now, yea. But in the long run, common sense dictates that heli assets & maybe even the CAS role altogether should be shifted to Army Aviation (w/ a couple squadrons of CAS aircraft to boot). Similarly, it's not totally crazy to expect the Air Force to eventually pass shore defense to the Naval Air Arm.
Air Force should be completely focused on winning air superiority over enemy skies and carrying out strategic missions there (with a solid base for defense of Indian airspace, of course). I would expect this debate to resurface once the IAF gets more of the planes it wants, and the three services begin to mature and move towards much needed things like CDS, theater command, integrated ops etc.
As for colors, that's a matter of personal choice. I'm personally partial to the sorts of color schemes seen on Israeli and some American Apaches.