Here is the solution, how to change the window title bar color in Windows-10, this example is also for Windows 8.1 valid!
1.) ... Open the Personalize Color Window in Windows 10!
2.) ... Activate the use of the Color for Windows and Task-Bar in Windows 10!
See also: Display Color Calibration on Windows 10 || Enable screen saver password in Windows 10 || "Personalize". In Personalization Window, please select "Colors".
(... see Image-1 Arrow 1 to 3)
The same can be accessed via the keyboard shortcut Windows + i and ►Personalize ► Colours
Colors Personalization Window, please select your favorite color or you can select the “Automatically pick an accent color from my background” to have Windows automatically a color based on the Desktop background of Windows 10.
(... see Image-2 Arrow 1 & 2)
And now activate the “Show color on title bar.” (... see Image-2 Arrow 4)
optional activate “Show color on Start, taskbar, and action center” (... see Image-1 Arrow-3)
FAQ 163: Updated on: January 18th 2018 20:15