Theme that picks up System color variables

Here’s a feature request. It would be awesome to be able to define colors in the theme XML files based on Windows System theme variables.  For example, I’d love to use the Windows accent color automatically in the EmClient themes.  Also, I’d love to pick up the dark mode vs. light mode color schemes from the system theme values.  It could be a matter of simply typing a variable name instead of the hexidecimal color values in the XML file.  Although, being able to add some attributes would be cool too.  For example <> could automatically make a darker, less saturated version of the system-wide accent color. This would be cool for system theme slideshows that automatically change the accent color based on the background slideshow. It’ll also be good when Windows has a scheduled light-mode to dark-mode option.