Hello! As some of you probably know, _WinAPI_DwmEnableBlurBehindWindow does not work as you'd like it to work in Windows 10. It doesn't add Aero-like blur, as seen in the new Start menu or Notification Center. I looked for a solution and found "the most elegant" one:
The blur only affects the inside of the window and it is not colored. It can be enabled via an undocumented SetWindowCompositionAttribute function in user32.dll.
_WinAPI_DwmEnableBlurBehindWindow for Windows 10 - this