Hello

Please download the webphone demo package from here: www.mizu-voip.com/Portals/0/Files/webphone_demo.zip

This contains all the documentation you need for a skin.
Also have a look at the examples.
-Toolkit_with_JS.htm: contains the basics for skinning
-iPhone skin: is a complete skin which you can freeky modify

Any web developer should be easily make a skin for the webphone with simple html, css and javascript. If some question arrise you should contact support@mizu-voip.com.

If you don't have any web developer around, then my colleague can also create a skin for you, but this will cost around $500 depending on your request.