GPL 2 Theme using a framework for commercial Theme?

Short answer:

You may change everything as long as you keep the same license.

No credit is actually required.

But it is polite. I would add it in the stylesheet under the notes section with a link back to the original.


Provide the original author and link to the source.

Something like “Based on the original work of John Doe: http://www.johndoe.com/myawesomecode