Where the controls and such take a color from somewhere. Maybe the background.
From the web:
"Right-click the desktop and select “Personalize”, or open the Settings app and select “Personalization” to find these options. Pick the “Colors” category. Disable the “Automatically pick an accent color from my background” option."
Mine went RED for a time.

https://cdn.discordapp.com/attachments/414900804588404766/582665236474101761/unknown.png
So my device manager is blue... My task manager is also blue. I'm not a tech person but.. what?
My whole screen went that exact shade of blue as well, but for a brief second.
I'm so confused please send help

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic