I don’t know the exact reason, charliecompany….
But I suspect it might have something to do w/ the fact that when I read the question, I knew exactly what publication was being referred to…..
:)
EDIT (from Harp’s reference above…)
In 1893, the FT turned light salmon—although later credited as a marketing masterstroke that made it immediately distinguishable from its competitor, the similarly named Financial News (founded 1884). In 1993, the FT printed a single edition of the paper on white stock to commemorate this change a hundred years earlier.