@ Grant
Templates will never have a “unified” look. They’re meant to look different. When I start adding more, they’ll have vastly different appearances. Templates for Connections are like themes for WordPress … hope that makes sense as to why things look different.
Market only has a single CSS that is loaded in the site, that would be the minified version. The un-minifed version if provided for those that want to start with the default style and alter it to meet their on requirements. But since you want to change Form, you don’t need to worry about the CSS in Market.
The cn-form-user.css file for Form can be found here:
../wp-content/plugins/connections-form/css/
To get a flat look, like Market…
Remove the box-shadow values from #cn-form .postbox.
Remove the background-image values from #cn-form .widget, #cn-form .postbox
and #cn-form .widget .widget-top, #cn-form .postbox h3
That’s it. I hope that helps!
