# Themes

This help article will demonstrate a step by step tutorial how to customize the ControlDefault theme for **RadButton**

1. Open [VisualStyleBuilder](https://www.telerik.com/products/winforms/documentation/tools/visual-style-builder/overview): Start menu (Start >> Programs >> Telerik >> UI for WinForms \[version] >> Tools).

2. Export the built-in themes in a specific folder by selecting *File >> Export Built-in Themes*.

3. Load a desired theme from the just exported files by selecting *File >> Open Package*

4. Select **RadButtonElement** in *Controls Structure* on the left side. Then, select **ButtonFill** in the *Elements* section.

   ![WinForms RadButtons VisualStyleBuilder Select ButtonFill](https://www.telerik.com/products/winforms/documentation/assets/cb70ab139b7f2f01bc57a44150d4d2f2/button-customizing-appearance-themes001.png)

5. Modify the applied *fill* repository item.

   ![WinForms RadButtons VisualStyleBuilder Modify ButtonFill](https://www.telerik.com/products/winforms/documentation/assets/756f606122d9da8dde9397d8724158a0/button-customizing-appearance-themes002.png)

6. Save the theme by selecting *File >> Save As*.

7. Now, you can apply your custom theme to **RadButton** by using the demonstrated approach in the following link: [Using custom themes](https://www.telerik.com/products/winforms/documentation/styling-and-appearance/using-custom-themes)

## See Also

* [Getting Started with VisualStyleBuilder](https://www.telerik.com/products/winforms/documentation/tools/visual-style-builder/getting-started)
* [Working With Repository Items](https://www.telerik.com/products/winforms/documentation/tools/visual-style-builder/working-with-visual-style-builder/working-with-repository-items)