"Toggle Theme" for blogs also - similar to editor

Hello all.

I was thinking how great “toggle theme” works on the editor. It is great that you can toggle from lite to dark them, depending on your liking or the light conditions.

Would it be easy to implement this also on our blogs? I know we could have custom themes but

  1. this still is more complicated for someone who does not want / have the time to spend for customization
  2. the visitor of the blog will not have the ability to toggle from lite to dark theme.

I’d love this. I use some CSS to default the theme on one of my Write.as sites based on the system setting of the user, but the toggle would be a nice offering.