I tried to use Firefox's dark color switcher, but it overlays over the stars (so I can't se recommendations). Since your focus is movies, a dark theme seems logical. Many of your users browse this site with an HTPC. Many HTPCs (like mine) use dark themes,,, specifically because it's more amenable to night viewing. Please give us a dark theme option.
Cool to know that you're using movielens on an HTPC. We hadn't considered a dark color theme before.