Question about amoled screen on my 950xl. Defect?

[Geddeeee]

Common to AMOLED and also to the OCD crowd....

 

[snakebitten]

Love this 950XL.

But my 1520 screen IS still more glorious to look at. Stuns me still when I wake it. (Now just a WiFi second device. Can't get myself to shut it off)