# Themes
Guidebook comes with 6 predefined themes, here you can find how to change them.
## How to change a theme
1. First navigate to `rcore_guidebook\client\html\index.html`
1. The instructions are at the top of the file, but let's break it down!
2. Find the line with ``
3. There you can replace `dark` with one of the available themes
1. **Available themes:** `dark, light, green, red, purple, gold`
2. Example: To choose green theme you would replace `dark` with `green` like this: ``
## How to make your own theme
1. First navigate to `rcore_guidebook\client\html\css\dist`
2. Then copy the `dark.css` theme and rename it to your liking
1. Example: If you want to make a new pink theme, you would copy `dark.css` and rename it to `pink.css`
3. Open the new file and edit the colors inside
1. 💡 You can use for example the [google color picker](https://g.co/kgs/EHLbpX) to pick the colors
2. 💡 These are the main colors in dark.css that you can "Find & Replace" in your editor.
1. primary: #1D2228.
2. background: #13181f.
3. accent: #ff9100.
4. text: #E1E2E2.
4. Change the new theme in index.html as described above and enjoy your new theme! ✨🎉
---
# Agent Instructions: Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter:
```
GET https://documentation.rcore.cz/paid-resources/rcore_guidebook/v1/themes.md?ask=
```
The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.