When a Skeleton node is selected in the Viewer window, the Skeleton Node Settings are listed in the Properties window. 
All Skeleton node properties A. Skeleton Node Settings
The Skeleton Node settings contain the Size and Color RGB properties, which let you adjust the size and color of the nodes that make up the skeleton.
If you adjust the color of skeleton nodes in the camera view, the changes also appear on the node in the Schematic view. Changing the color of nodes on the skeleton can make it easier to locate them while using the Schematic view.