Update knowledge-base/common-theme-customization-options.md

knowledge-base/common-theme-customization-options.md

@@ -39,7 +39,7 @@ Is there a simple and streamlined way to customize all component styles?
 Generally, there are **four** ways to customize the appearance of the Telerik Blazor components. All of them, except the first one, add an extra step to **every** UI for Blazor version update.
 
 1. Use color CSS variables to modify an existing theme.
-    * This approach is supported for theme versions `8.0.0` and Telerik UI for Blazor versions `5.2.0` and above.
+    * This approach is supported for theme versions `8.0.0` and Telerik UI for Blazor versions `6.0.0` and above.
     * It is a simple and sustainable way to make minor or major customizations to the **colors** of an existing CSS theme, even at runtime.
     * Upgrading the Blazor components does not require any additional steps with regard to the CSS code, unless there are breaking changes in the CSS variable names.
     * The apperance of the Telerik components depends on CSS code in two different files. If you prefer to avoid this, then create a custom theme.