Steam

The official Steam client can be themed using the Noctalia color scheme through the built-in theme system.
This requires the open-source modding framework Millennium and takes advantage of the Material Theme to provide dynamic color integration.

Setup

Section titled “Setup”

1. Enable Steam theming in Noctalia:

• Open Settings → Color Scheme → Templates
• Toggle on Steam

1. Install Millennium : you can find instructions for your distribution on the installation page.

2. Install Material-Theme : copy the Theme ID from the theme’s page on steambrew.app, and install it in the Millennium Theme settings.
   After that, you should see the theme installed but not enabled yet:

1. Enable the theme by clicking on the “Use” button.

2. Click on the drop-down on the right to configure the theme:

3. In the “Color” drop-down menu, make sure to select “Matugen”.

1. Regenerate a color scheme in Noctalia (for example, toggling dark-light mode, or changing the wallpaper), and restart Steam.

Troubleshooting

Section titled “Troubleshooting”

• Theme not appearing: Make sure you’ve enabled the theme in Millennium settings.
• Colors not updating: Restart the Steam client fully (Steam menu > Exit) after installing the theme and toggling Matugen option. Also make sure Millennium is installed and running correctly.
• Theme looks broken: Ensure you’re using the official Steam client and have the latest version of Millennium and Material-Theme.

Additional Notes

Section titled “Additional Notes”

The theme will automatically update when you change color schemes in Noctalia.