yup, LEDs are ideal for rock n roll, lots of advantages, but are less effective if you want something verging on the naturalistic - for reasons already stated...
It is incredible to think you can run a whole lighting rig off a 13A supply, with watts to spare, when you go down the LED route. In the old days of tungsten, all you could get out of 13A was 6 x 500W spots at any one time, barely enough to light a pub-sized stage, and each one in a single colour with no beam movement.