Adwaita for Steam

A skin to make Steam look more like a native GNOME app

       

Limitations

• Steam updates may reset theme: The installer will patch Steam files in order to theme the interface, these files may be reset by Steam updates. When this happens, you will need to reinstall to repatch them.
• Rounded corners: Not all elements can be rounded, use Rounded Window Corners Reborn extension on GNOME.
• Steam website pages (Store/Community/Profiles/etc): No longer themable with the primary method.

Color themes

Color theme previews

adwaita	adwaita-gray	breeze	canta
catppuccin-frappe	catppuccin-latte	catppuccin-macchiato	catppuccin-mocha
dracula	everforest	gruvbox	kate
metro	nord	oled	one-dark
pop	rose-pine	tokyo-night	tomorrow-night
vapor	vgui2	yaru

Installation

Adwaita-for-Steam supports multiple installation methods:

• Installer script - primary installation method, does not require any third-party CSS injectors.
• AdwSteamGtk (Linux, flatpak) - graphical application to configure installation options and automatically install skin updates.
• Millennium - open-source modding framework for creating and managing Steam Client themes and plugins.
• CSSLoader - a native standalone styling engine for Steam on Windows and Linux.
• SFP - skin and script injector for Steam (formerly SteamFriendsPatcher).

The installer script or AdwSteamGtk are the recommended installation methods. Third-party injector support is provided for users who already use one of them.

Supported platforms:

Platform	Installer script	AdwSteamGtk	Millennium	CSSLoader	SFP
Linux, SteamOS	✅	✅	✅	✅	✅
Windows	✅	❌	✅	✅	✅
macOS	✅	❌	❌	❌	✅

All installation methods except SFP support most of the available customization options:

Platform	Installer script	AdwSteamGtk	Millennium	CSSLoader	SFP
Color themes	✅	✅	✅	✅	Base theme only
Light/Dark mode	✅	✅	✅	✅	System only
Accent colors	✅	✅	✅	✅	Theme default
Window controls	✅	✅	✅	✅	Theme default
Extras	✅	✅	✅	✅	❌
Automatic updates	❌	✅	✅		❌

Installer script

git clone https://github.com/tkashkin/Adwaita-for-Steam
cd Adwaita-for-Steam
./install.py

Arguments

Option	Short	Values	Default	Description
--target	-t	default, flatpak, snap, or a Steam installation path	default	Install the skin to the selected Steam directories.
--color-theme	-c	Available themes (see --list-options)	adwaita	Select the overall color palette.
--color-scheme	-s	auto, light, dark	auto	Follow the system appearance or force a light or dark theme.
--accent-color	-a	auto, theme Predefined color - blue, teal, green, yellow, orange, red, pink, purple, slate Custom color	auto	Choose an accent color. auto uses the system accent when supported. theme uses the selected theme's default.
--font	-f	adwaita, cantarell, system	adwaita	Select the UI font.
--windowcontrols-theme		auto, adwaita, breeze, windows, macos	auto	Choose the style of the window control buttons.
--windowcontrols-layout		auto, gnome, pantheon, kde, windows, macos, or a custom layout string	auto	Choose the button placement. Custom layouts use the GNOME format, e.g. close,minimize:maximize.
--extra	-e	One or more extras (see --list-options)	None	Enable optional tweaks such as UI customizations.
--custom-css		Path to a CSS file	None	Load additional user CSS after the theme.
--no-optimize			Disabled	Skip CSS bundling and minification (useful for development).
--uninstall			Disabled	Remove the skin from the selected Steam directories.

Examples:

# Show help
./install.py -h
# List color themes and extras
./install.py -l
# Install with customizations
./install.py -c catppuccin-macchiato -e login/hide-qr -e library/hide-whats-new
# Install with a color theme and a custom CSS file
./install.py -c catppuccin-macchiato --custom-css /path/to/custom.css

AdwSteamGtk

Graphical installer by @Foldex. Linux only. Supports automatic skin updates.

Millennium

• Install Millennium.
• Copy Theme ID from the theme page.
• Open Millennium Settings > Themes. Click "Install a theme" and paste the Theme ID.
• Enable the theme in Millennium.

CSSLoader

• Install CSSLoader-Desktop or the CSSLoader plugin for Decky Loader.
• Download the latest Adwaita-for-Steam release.
• Extract files to ~/homebrew/themes/Adwaita.
• Enable the theme in CSSLoader.

SFP

• Install SFP.
• Download the latest Adwaita-for-Steam release.
• Extract files to <Steam directory>/steamui/skins/Adwaita.
• Enable the theme in SFP.