Star Wars Death Star theme for mainsail
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:
favicon-16x16.png
favicon-32x32.png
main-background.png
sidebar-background.gif
sidebar-logo.png
The different sidebar logo and icons can be renamed 'sidebar-log.png',favicon-16x16.png and favicon-32x32.png then replaced in the .themes folder with it. if you prefer to have those
Happy printing!