2nd Screen stays yellow when quitting or uninstalling. (El Capitan)
I am on "iMac 5K" with a "27" 2011 iMac" as a second display through thunderbolt.
When I quit/uninstall flux on my computer, my second screen will go yellow and stay yellow. Yes, even when I uninstall the app, and restart my computer, my second screen stays yellow. The only way is to keep the app running and disabled. I can't uninstall it or quit the app or else my 2nd display will stay yellow forever. A bit frustrating.