Zehn is a Steam skin based on Windows 10’s transitional design language. It comes in both dark and light modes with lots of customization!
Why the name “Zehn”? Well, I wanted to make my own attempt to match Steam to a stock Windows 10 experience. The design language behind this OS is technically known as MDL2, the first iteration of Fluent Design. It is a transitional design language that retains the sharp lines and minimalistic icons of Metro and merges them with reactive Fluent effects such as Acrylic and Reveal that evolved into Fluent 2 for Windows 11. So, I took the German word for “ten”, as it also sounds like the Japanese “禅”. My mind is clear knowing that this theme fits seamlessly into a Windows 10 environment.

Part of the design philosophy behind Zehn is to only show what is always going to be relevant to your needs. The rest can be displayed when the ephemeral moment comes. Steam has a lot of visual clutter and redundancy, so Zehn seeks to alleviate you of this and let you navigate Steam without all the distraction. This is the elegent simplicity of Windows 10 Fluent Design that you love brought to Steam!
Some ways this is accomplished in Zehn:
[!TIP] Check out these extended previews to see more of Zehn!
Dark Mode
#### Main  #### Friends  #### Chat  #### Media  #### Settings  #### Notes  #### Servers  #### Browser  #### Overlay Light Mode
#### Main  #### Friends  #### Chat  #### Media  #### Settings  #### Notes  #### Servers  #### Browser  #### Overlay 
Zehn features various options to change the look and layout of the skin, including hiding and showing content, changing avatar style, and more.
There are several options that mirror settings in Windows 10, such as using transparency effects and showing the accent color on window borders. Along with the choice of light or dark mode, you can ensure Zehn matches your Windows 10 setup! You can even let Zehn automatically sync with your system mode!
Zehn is built on the foundation of variables to make broad-sweeping changes a breeze and offer a high degree of consistency. You can use Millennium’s Quick CSS feature or modify ~/custom.css on SFP to override these variables found in ~/css/variables.css!
[!NOTE]
Millennium
Use Millennium’s Library Manager to select Zehn’s options inside of Steam.
SFP
Edit the config in
~/options.json. Please reference the wiki to know what the values for each option may be.
You can blend colors into both the foreground and background of Zehn. Give Steam more than just a native look, give it your look in either light or dark mode!

[!NOTE]
Millennium
Configure color blending on the
Personalizationtab under theThemesubjection. Set the colors under theColorstab.SFP
Edit the config in
~/options.jsonas usual. Set the colors in~/config/colors.css.
Acrylic is a Fluent Design material that blurs the background of a surface with a translucent color along with a bit of noise. In Zehn, Acrylic is handled in two ways when Transparency Effects is enabled in the options.
Certain surfaces will always have an Acrylic blur on them. These are generally small panels that blur images behind them.
Some windows have reactive panels that change into an Acrylic surface on window focus. These fall into two categories:

[!WARNING] Behind-window Acrylic may require additional compositing software to function. See the Acrylic page on the wiki for a guide on how to get it to work!
Reveal is a Fluent Design effect that reveals hidden backgrounds and borders where you mouse over. When Transparency Effects is enabled, certain buttons, lists, and more are given Reveal!

You can give your waifu a home in your library! Supports random image selection, adjustable placement, and more.

Zehn features several added buttons for an improved experience:
Some Millennium plugins need a bit of styling to fit with Zehn. You can enjoy the following plugins made to look right at home in a Zehn Steam:
~/steamui/skins.~/millennium/themes.Zehn supports both SteamFriendsPatcher and Millennium.
For in-depth documentation, see the wiki!
Check out the Announcements discussions for details on recent major updates.
Work in progress is also documented in the Previews discussions. Find out what is being worked on and learn what is up-and-coming for Zehn!
Head on over to Support if you need help!
Join the new Steam Group and drop into the chat room!