Like a watch, the C1RadialGauge control includes a C1Gauge.Face element. The C1Gauge.Face appears above the background but behind the pointer and other elements. For example, in the image below the C1Gauge.Face is a plain gray circle that appears behind the elements in the gauge:

In the image above, the  C1Gauge.Face element is customized:

<!— Face -->

<Face>

    <FaceStyle Stroke="#E0E8EF">

        <Fill Color="#E0E8EF">

        </Fill>       

    </FaceStyle>

</Face>

The C1Gauge.Face element appears by default as a blue-gray circle, but you can customize the appearance of the C1Gauge.Face element by setting several properties in the GaugeFace class, including the GaugeFace.FaceStyle and C1RadialGaugePointerCap.Template properties.