I figured some people may be interested in this. This is a theme for Vichan (the software this board runs on) which gives it a pepe-ish / shadilay feel. Maybe one of the admins can add it in the CSS list?
A preview of the theme can be found in the OP image. If you'd like to give SHADILAY a try, you need to do the following:
1. Open your Options
2. Click user CSS
3. Paste the contents of this link https://raw.githubusercontent.com/OpenIB/OpenIB/1b06875ab90b9d77e8f7ddf0cd16ba15b2089270/stylesheets/shadilay.css into the box
4. Click "Update custom CSS"
5. You're done!
Credits to H0K4CH4N for the theme.