Raddle is awesome but holy fuck that white background burns my retinas. So I made a Night Mode. Inspired by the Reddit Night Mode but with more radical red.
DO NOT INSTALL THE STYLISH PLUGIN THAT THE LINK SUGGESTS
This plugin tracks your browsing data and uploads it some marketing agency. Instead install the Stylus plugin, which is FOSS
Firefox friends: https://addons.mozilla.org/firefox/addon/styl-us/
Chromium comrades: https://chrome.google.com/webstore/detail/stylus/clngdbkpkpeebahjckkjfobafhncgmne?hl=en
Stylus GitHub: https://github.com/openstyles/stylus
Then either install the plugin from the link, or click the Stylus icon in your browser in a tab with Raddle.me open, and click 'Find styles'.
I'm bound to have missed something. Drop any bug reports here.