What is "suffusions"

Usage examples of "suffusions".

There was a comforting agglomeration of colors, although not the usual spectrum of heat suffusions that came from, for example, a human.

I notice I have somehow mixed up two events, my visit with Rita to Briceland on our way to Carntrip, and our passing through Briceland again on our way back to New York, but such suffusions of swimming colors are not to be disdained by the artist in recollection.