Thanks for replies gentlemen. Looks like it's the tail that has to clear the color-coded line. I would still appreciate some official refernence (Icao annex or some such)...
Being facetious, I admit, official reference is common sense. You are taxi-ing out to the LVO rwy. You stop at the beginning of the amber/green lights, at the CAT2/3 Hold, as these indicate your nose is going to enter the protected area. Turn your a/c around as you vacate across the same holding point. If your nose would violate the protected area, then so can the tail. QED. KISS.