11/20/2017: all grey after porn

I decide to watch a porn video and am immediately hit with an onslaught of the color grey (black and white). This appears to be a common occurrence after watching porn, for some reason. These are all SUCCESSIVE tweets on my feed:

(REMINDER: I only follow between 5-20 (usually around 10) twitter accounts at any given time, out of over 300 million active users. The statistical probability of these kinds of syncs happening randomly, and on a regular basis like they do, is virtually zero. They are happening on purpose.)