> For clean Markdown of any page, append .md to the page URL. > For a complete documentation index, see https://docs.fluxerlist.com/llms.txt. > For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.fluxerlist.com/_mcp/server. # Add a theme to Fluxer Themes are custom CSS that change how the Fluxer client looks. FluxerList lists community-made ones, and each theme page has a button that takes you straight to Fluxer to apply it. You don't need a FluxerList account to install a theme, but you do need a Fluxer account. #### Find a theme Select **Themes** in the top bar to open Browse Themes. * Search by name in the search box. * Sort by **Most Popular**, **Newest**, or **Most Downloaded**. * Use the **Styles** buttons (Dark, Light, Neon, Pastel, and so on) to narrow the list, or the **Verified** filter to show only verified themes. Each card is a large tile showing the theme's preview image, or a preview of the interface in its colours when it has no image. A card also shows the author, a short description, the style tags, its downloads and votes, and its own **Get for Fluxer** and **Vote** buttons, so you can apply a theme straight from the list. Select the tile itself to open the theme's page. ![The Browse Themes page with numbered markers on the Themes link, the search box and the first theme card](/_fern-files/_img/5f428ba6f3fe025d17dc746c07081d5ce0ddf2b8d8690f9690ec9e429cb1b32a.webp) #### Check the preview The theme page has the name and style tags at the top, then **Get for Fluxer**, **Vote**, and **Share**. Below them is a large **Preview**. The sidebar shows the colour palette, downloads and votes, and the rating, and **About this theme** lists the author, style, and when it was published. Check the preview to make sure it's what you want. When a theme has both an uploaded image and CSS, the **Preview** box has a switch between **Screenshot** and **Fluxer preview**. Fluxer preview is an interface preview built from the theme's CSS, and a **CSS Source** button under it lets you read the code. Further down there's a comments section you can read and post in, and more themes in the same style. ![A theme page showing the Fluxer preview, with the Get for Fluxer button marked 1 and the Screenshot and Fluxer preview switch marked 2](/_fern-files/_img/8553c68ce5a7c21af606ffa6f2d277a8e8a43e6aef1ec3e254623714b7cdd322.webp) #### Select Get for Fluxer Select **Get for Fluxer** on the theme's page or on its card, or the **Install** button in the sidebar. They all do the same thing. Fluxer opens in a new tab on that theme's **Apply theme** page. Sign in to Fluxer if you're asked to. If you use the desktop app, choose **Open Fluxer** to continue there. ![Fluxer's Apply theme page showing Open in Fluxer for desktop, with Create account and Sign in options](/_fern-files/_img/fe492dbd18eec08c57d8d305f42a2e29795a0e7a282ddb4e336fac3ef1c56fb4.webp) #### Apply the theme in Fluxer Fluxer opens an **Import theme** window showing the theme's CSS. Select **Apply** (marker 1) to use it, or **Cancel** to back out. > **Warning** > > The message at the top says **This replaces the quick CSS** on your Fluxer account. If you've written your own quick CSS, applying a theme overwrites it, so copy it somewhere first. > **Note** > > A theme only applies where you apply it. If you apply it in your browser, it changes Fluxer on the website only. To get it in the desktop app too, apply it there as well: choose **Open Fluxer** on the Apply theme page so the desktop app shows this window. ![Fluxer's Import theme window showing the theme's CSS, with the Apply button marked 1](/_fern-files/_img/7031a229a57c526ad01b4c618cd669ea826262856f642a798f2c971204ff4691.webp) ## Remove or change a theme An applied theme shows up in Fluxer as colour, font, and size changes. To remove them, open **Settings**, then **Themes** (marker 1), and go to **Colors and fonts** (marker 2). It shows how many changes there are, like **76 changed**, next to **Clear all changes**. Select it, then confirm in the window that asks **Clear all color and font changes?** (marker 1 below). ![Fluxer's Themes settings page with the Themes entry marked 1 and the Colors and fonts section marked 2](/_fern-files/_img/bec4c109f4d1e3dfc5ec821d66b9e6f2d50bcc8a9c1601e88e0d5195334f1d14.webp)![Fluxer's Clear all color and font changes window with the Clear all changes button marked 1](/_fern-files/_img/2ac8c32f99faef69f81974a8c129984de8d5f9e53cb05ceb085762a8bde024ad.webp) Fluxer says that saved themes and the rest of your quick CSS stay. Do this in each place you applied the theme (the website, the desktop app, or both). To switch to a different theme, go back to FluxerList, pick another one and select **Get for Fluxer** again. Applying a new theme replaces the one you had. ## Something not working? * **Nothing happens when you select the button.** Fluxer opens in a new tab, so your browser may have blocked it. Allow pop-ups for fluxerlist.com and try again. * **A theme looks broken.** Themes are written by community members. You can report one from its page with **Report this theme**. Want to share your own theme? See [How FluxerList works](/how-it-works) for what a theme listing includes, then select **Add listing** in the top bar and choose **Theme**.