Neon lights and glitched effects, to respect the style of the game this theme will be
full of bugsawesome, maybe.
You need mainsaill already installed on your machine, open your browser and search your 3D printer IP.
In mainsail: go to settings -> machine -> add a folder called .theme
Make sure to check show hidden files
Now, inside .theme, add these files:
custom.css
favicon-32x32.png
main-background.png
sidebar-background.gif
sidebar-logo.png
Happy printing!