I created this .qvw with several examples of gauges.
Each of them can be easily configured from the script, except the items that can only be configured from its corresponding option in Presentation tab.
Each graph basically consists of several overlaped layers. From bottom to top are:
Sphere, main chart, secondary chart, frame and glass.
You can change frames, glasses and gauges to compose your own graphic. You can play too with transparency of glass to achieve the desired effect.