If you run a site or forum, how many different theme options do you think is acceptable? I personally think most sites only need a few select themes, basic ones that aren't too frilly or crazy. Essentially a dark mode theme, the basic light theme, a theme for those with issues seeing, and maybe a theme based on a certain color scheme. Or what would be even cooler is if forums allowed users to modify the look to any color/style they want. That'd be pretty cool I think.