At almost every job I've had to push back on designs with low contrast and large fixed headers for UI elements. These things look fine on a 27" 4k screen in off

At almost every job I've had to push back on designs with low contrast and large fixed headers for UI elements. These things look fine on a 27" 4k screen in office lighting, but they're horrible on a 13" laptop with glare from sunlight. Similar to Facebook's 2G Tuesdays, I'd love to see what designers would come up with if you made them spend one day a week using a 13" 1366x768 200 nit TN screen.