Hi folks,

RadFormDecorator does change the background color, however, if it starts to change the font color of the page, this could easily ruin the text appearance on it. We want to avoid this and we do not plan to change its default behavior since it is not a style builder.

Nevertheless, you can achieve the required functionality and change the decoration for the desired HTML elements using CSS and the following classes 

<style>
		.RadForm_Black {
			color: white; //will change the font to white
		}

		.RadForm_Black a {
			color: yellow;
		}

		.RadForm_Black a:hover {
			color: aqua;
		}
</style> 

The Black string in the class names represents the name of the used Skin.