> For the complete documentation index, see [llms.txt](https://docs.iceteagroup.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.iceteagroup.com/general/framework/skins-and-themes/theme-builder.md).

# Theme Builder

Wisej.NET Theme Builder is a self-contained Windows executable that allows you to edit or create Wisej themes and theme mixins.

The theme system in Wisej.NET is quite powerful and goes beyond simple CSS, LESS or SASS. It is entirely contained in a single JSON file, including colors, images, fonts and appearances. You can virtually change any visual aspect of Wisej controls through a single theme file.

### Main Window <a href="#main-window" id="main-window"></a>

<figure><img src="https://215843345-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FyrHxzbanglDTTaYfB34Z%2Fuploads%2Fgit-blob-2999ff902f2b1e6cb4f50e198cbf276a3caf6e1d%2Fimage%20(40)%20(1).png?alt=media" alt=""><figcaption></figcaption></figure>

{% embed url="<https://docs.wisej.com/theme-builder/>" %}