From: "Muzaffer Tolga Ozses" <tolga@ozses.net>
To: development@drupal.org
Sent: Thursday, October 10, 2013 10:40:37 AM
Subject: Re: [development] Theme system

I see that you don't have
1- Description,
2- Engine,
3- Screenshot

These might help,

Hi Muzaffer,

The only required fields are "Name", "Base Theme", and "Core". It also appears that at least one stylesheet must be overridden to inherit any of the others.

Thanks for your help,

Chris.