XPS13 2015 QHD Color Uniformity

I exchanged my first two devices at the Microsoft store due to light bleed and poor color uniformity. I managed to get a device with minimal light bleed, but the color uniformity still seems poor. Light colored screens (particularly white and gray) look splotchy, especially in certain problem areas. It's pretty obvious viewing a white website like Google, or even this one.... Viewing colorful pictures looks normal for the most part, as does viewing websites with darker backgrounds.

Anybody...

XPS13 2015 QHD Color Uniformity