It'll do that but only for very, very special reefers. I always knew you were special!
The monti is a Tyree Aequituberculata monti (montipora aequituberculata) and a little different than the much more common Monti cap (montipora capricornis). I googled the Tyree (not going to spell it out again) and some of the photos do show a blue/purple new growth ring.