ah... the fauxtina discussion
well, we went through all (hand colored, originally) catalogs from the 1940s onwards, the earliest color catalogs in the museum, spoke to witnesses that knew the watches when they were launched (the Sales Director of Breitling USA Corp. & later President of the US-distributor Wakmann, Joseph Karasick is alive, well and very, very sharp at the ripe age of 94) - and for both the Navitimer and the 765AVI tried to duplicate the color and texture of the original lume (including having it applied by hand).
Radium lume never was white (we have a slighty lighter yellow w/ the early Tritiu on the Mk3.2 and later reverse panda Navitimer, then some batches of greenish lume in the late 1960s and early 1970s, but also never white Tritium)
