Accent color is not used in title bars, start or task bar.

Ken_Hadden  I found a workaround! This is my current colors with my own picture for the background and I chose a manual accent color. I saved the settings as a theme and selected to use it. The File Explorer title bar picks up a shade of color from the background picture and not the chosen accent color in settings, if I use a picture with blue it will be a shade of blue. The Start and Taskbar are from the Accent Color choices. I chose Orchid Light and this is the result. Again, if I choose any other color it will be that color in Start and Taskbar displaying different shades. I am happy with the results. I also figured out how to easily change the font color of the desktop icons from black to white. I choose blue as solid background color, then rechoose my saved background, restart explorer.exe. As for the dropshadow on the desktop icons, I select/deselect on Performance options, restart explorer.exe. Done! All is well after shutdown/restart!