> For the complete documentation index, see [llms.txt](https://bikeguide.hogbaysoftware.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://bikeguide.hogbaysoftware.com/bike-2-preview/using-bike/using-themes.md).

# Using Themes

Use themes to customize Bike's colors and fonts (in future). You can quickly switch themes in Bike's "Appearance" settings panel. You can share themes with other users.

**To choose a theme:**

1. Open Bike > Settings > Appearance
2. There choose your preferred theme for light mode and dark mode.

**To install a theme:**

1. Choose Bike > Settings > Appearance
2. Click the "Open Themes Folder..." button
3. Drag or modify any top level `.bktheme` file in that folder
4. New themes should immediately appear in the popup menus in the Appearance settings panel.
5. If it doesn't appear in popup, there may be a syntax error in the theme. Use Window > Logs Explorer to see problem.