Nice theme

I like theme it looks great.
1 suggestion regarding full-widthpage.php . If I use it for some content like bbpress or buddypress to have full paga layout without sidebar related pages are not converted to full width, instead they stay same 8 block page pulled left without sidebar. This is because full page classes are defined in header.php .
So there should be some easy way using full page without overriding get_layout_class() and sparkling_main_content_bootstrap_classes() functions used in header.php.
So for next update it would be great if you make it easy to use full-widthpage.php just renaming it to use as wrapper for plugins that we want and theme render it as real full page.