The screen was great until one day everything looked too green.
Adjusting with the screen controls did not work - neither the preset
temperatures, nor individual setting of RGB.
When not connected to a computer, the colors on the no signal message are perfect.
When resetting or running auto-adjust the correct colors appear, but then the screen locks on the bad colors.
Suspecting some kind of firmware memory corruption I tried to
disconnect the monitor while it was showing the right colors during the
reset. This did not help.