The Ring Diagram product is fully editable.
Here is a short description of how you can change some different elements in the graphics.

Change of color:
You can change all the colors in the presentation. The way you do this is by double clicking on the element you wish to change color on. Then a pop-up box appears. In this pop-up box, choose "Fill" and then "Solid" if the object only has one color or "Gradient" if it has multiple. Choose the color you like in the color scroll bar and then click ok.
To change colors on the sides of the rigns, choose "3D-Format" in the pop-up box and then "Depth & Surface". Change the color under "Depth Color".

Change the hight of the rings:
Double click on the ring you wish to change size on. Then a pop-up box appears. In this box choose "3D-Format" and then "Depth & Surface". Under "Depth" you can alter the size.

Scale:
To scale the rings, click on the ring you wish to scale. A blue marker around the ring will appear. Click in one of the corners of the blue marker, hold the mouse in and drag outwards or inwards. To scale uniformly hold shift down in while dragging. You can do the same with a group of objects. Then you just drag in one of the corners of the blue marker around the group.