For permission to use and revise the icon that is used in Visual Studio 2012?

Question

Hi,

This question in the forum again. http://social.msdn.microsoft.com/Forums/en-US/vsx/thread/bcbe988c-e615-4cdd-be9e-9d59390d7485

We want to hear, is it okay to revise the image? It look like following image.

In addition, when the date of publication of the icon and images will?