Yasu what a lovely DB dinner suit. Thanks mainly to you and another friend from this forum that made me look into DB from Gianni Volpe I may be ordering my first DB suit next autumn (flannel chalkstripe) ...
interesting inlustration of 1940 and 1950 ties
IMHO and historically, dove grey is the more appropriate colour for the groom. Buff, baby blue and other colours were and are usually worn by the wedding guests or by all attendees in other occasions such as racing etc. (in a morning attire context).