Use the BackColor property to define the control's background color. Use the BackColorNode property to define the default background color for nodes. Use the BackColor property to define the background color for a specified node. Use the Picture property to display a picture on the control's background. Use the SelColor property to specify the color to mark the selected node. Use the SelectNode property to specify the selected node. Use the BackColor property to specify the control's background color. Use the LinkColor property to specify the color for the links between nodes. For instance, the SelColor property has the same value as BackColor property, the control doesn't paint the mark around the selected node.