You mean something like this: https://sciter.com/sciter-4-2-support-of-acrylic-theming/ https://sciter.com/sciter-4-2-support-of-acrylic-theming/ ? (Note, that

You mean something like this: https://sciter.com/sciter-4-2-support-of-acrylic-theming/ https://sciter.com/sciter-4-2-support-of-acrylic-theming/ ? (Note, that is not a UWP application) As of automatic detection check my question on SO: https://stackoverflow.com/questions/51334674/how-to-detect-windows-10-light-dark-mode-in-win32-application https://stackoverflow.com/questions/51334674/how-to-detect-w...