Use the Picture property to display a picture on the control's background. Use the PictureDisplay property to align the picture on the control's background. 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 SelColor property to specify the color to mark the selected node. Use the SelectNode property to specify the selected node.