Adjective
white-on-white (not comparable)
(uncommon) Taking place between white people.
In particular, you’ll see a lot of sarcasm about “white-on-white crime” and “white-on-white violence.” Source: Internet
It's all white-on-white, with breezy long curtains and natural stone that comes from the surrounding desert. Source: Internet
This could also, of course, be done for Hispanic-on-Hispanic crime, white-on-white crime, Asian-on-Asian crimes…. Source: Internet
With walls, flooring and work stations all fashioned out of Dekton…the new kitchen will feature a white-on-white palette—a nod to the sense of promise and potential of a fresh start. Source: Internet