This is a theme for IntelliJ based off the colour scheme from the 2020/21 CS141 Functional Programming module.
Logo taken from screenshot of 2020/21 CS141 Functional Programming material, credit to Michael Gale
-
Using IDE built-in plugin system:
Settings/Preferences > Plugins > Marketplace > Search for "Functional Programming" > Install Plugin
-
Manually:
Download the latest release and install it manually using Settings/Preferences > Plugins > ⚙️ > Install plugin from disk...
Plugin based on the IntelliJ Platform Plugin Template.