Anecdotal, feel free to disregard (basically opinion, based on some facts):
Paps which cooperate with celebs, reporters that have photographers in tow always say that the gray suit is the hardest thing to photograph , because regardless of the background the wearer ''blends'' with the environment /light/ and the ''blandness'' of it implies the wearers desire to ''let others shine.''
See Hawwy usually around Peg, and their entire fake Royal security entourage now wearing gray suits.
Secret Service never/extremely rarely wears light gray suits. And its also rare for RPOs.
Chances are these are contractors or the Harkles demanded this, imagine the FOIA.