property SwimLane.OverviewColor as Color
Specifies the color to show objects outside of the surface's client area.

TypeDescription
Color A Color expression that specifies the overview color.
By default, the OverviewColor property is RGB(190,190,190), If the control's OverviewColor property is -1, no elements is shown on the border. Use the OverviewColor property of the Element to specify a different color to be shown for specific elements. The OverviewColor property has effect when the element is not fitting the surface's client area and it is shown on the border of the surface. The BorderWidth / BorderHeight properties specify the size on the margin where the overview elements are shown.

The following screen shot shows the how elements are shown when they are not visible in the surface's client area ( look on the border ) :

The following screen shot shows the elements when they are visible on the surface's client area: