> For the complete documentation index, see [llms.txt](https://docs.ngsurvey.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ngsurvey.com/form-management/style-branding/style-editor/theme.md).

# Theme

## 👨‍🎨️ What is a theme ?

A theme regroups all the global styling colors and fonts variables that will be used to generate the final style.

You can set following family colors.

* **General** forms related colors like background, header and form page background.
* **Primary** are the colors that will be displayed the most frequently across your survey components.
* **Secondary** colors accents actionable survey components like for example [radio buttons or checkboxes](/form-management/form-designer/answers/answer-types/selection-answers.md).
* **Errors** are all the colors used by the survey error messages. You may force the preview survey to show all its error message by enabling the [preview errors option](/form-management/style-branding/style-editor/style.md).

{% hint style="info" %}
You may also any of the global variable in your [CSS code](/form-management/style-branding/style-editor/css.md) using the var keyword eg: color: **var(--ngs-text-color)**
{% endhint %}

## 🖍️ Picking a color

You may click on any color swatch to open the color picker to select the color of your choice.

![](/files/-MBcU7f0wEVsBFabJVQh)

To reset a color you may select the empty color swatch on the top right of the picker.

![](/files/-MBcbruhQsYgNT7xEEZH)

## 🔤 Switching fonts

To switch fonts you may either open the font selection pane to select a new font from the list of available fonts.    

![](/files/-MBcOkHmiZT132UYgnp_)

{% hint style="warning" %}
The available fonts list uses Google Fonts if you are not able to see any fonts make sure that you have properly [link your ngSurvey installation with Google Fonts](/installation-setup/system-settings/google/google-web-font.md). 
{% endhint %}

Or you may also change manually the fonts from the theme code variables list.

![](/files/-MBcP84eRa62d_SYw8vH)

{% hint style="info" %}
Fonts selected from the available fonts list will be automatically downloaded from the Google Fonts servers if the respondents does not have the selected font installed on his device.
{% endhint %}


---

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