Purely the justification of their own job. Open up any settings window in Windows 10. The title bar and the window contents are the exact same color, making it

Purely the justification of their own job. Open up any settings window in Windows 10. The title bar and the window contents are the exact same color, making it impossible to tell where exactly you need to click to drag the window. In a sane world the programmer responsible for that would be out on their ass.