Comment on Stallion WordPress SEO Theme by SEO Dave.
You can see a live demo at seo-consultant-services.co.uk check it out in various browser sizes.
Stallion Responsive is a rewrite of the Stallion SEO theme code, made a LOT of changes to add responsiveness that’s not easy to achieve with the Stallion SEO Theme 7.1.1 code.
Working on the last feature (ability to easily create new colour schemes: your earlier CSS questions are covered on an options page, all colours (130 of them) can be changed) before release, with a little luck it will be before Christmas.
Stallion Responsive includes a Demo version that has all features enabled so it can be installed alongside the Stallion SEO Theme to see if it’s worth switching themes. There are too many changes between Stallion SEO Theme and Stallion Responsive to do a straight upgrade, though it will use Stallion featured image data and the SEO data added via the Post and Page edit screen and SEO data from from the All In One SEO Pack plugin and the Yoast WordPress SEO Plugins.