One cool thing about Windows 10 is that you can tell the system to automatically pick the Windows accent color (the color used for the taskbar, start menu, window borders, window title bars, highlighting, etc) according to the current desktop background. So, for example, if the desktop background is a picture of red roses, the accent color will be some shade of red to match it. This has the effect of creating essentially a dynamic theme for the desktop.
This setting is also dynamic. In my case, I have my desktop wallpaper change every minute, cycling through a collection of pictures in a folder. Every minute when the background changes, the Windows accent color changes. I find that pretty cool!
Anyway, I think it would be cool if this sort of functionality could also exist for Fences. Right now, when I look at my desktop, the current "theme" could be any color, but my Fences are always static. Sometimes they end up going together well. Other times they clash and it looks a little weird. Consequently, I have resorted to just making my fences a mostly-transparent gray.
TL;DR: I would like to see an option for the Fences color to match the current Windows accent color.