Hello.
I have read your requirements and I believe we can work out this task.
I am complete web designer/ programmer which includes graphic design and also programming (html, css, php). I develop in various cms system (joomla, drupal, wordpress) or standalone application mvc (Zend, Codeigniter, Cake PHP) with all latest technologies (json, ajax, rest, bootstrap).
I have strong skill on theme design in Wordpress, so this really is not a problem. Check my profile, I already did some theme templating.
I am very interested in long term relationship.
If you have any questions feel free to contact me.
Best Regards.