I ported my Immunity GTK theme to the 3.6 light themes. It basically Radiance, with an alternative window title based on Elementary and Ambiance panels and menus. Also added the Faience active tab for good mesure and simple scrollbars for GTK2 themes for all those apps (like gtk skinned qt apps, mozilla apps, libreoffice etc.) that don't support the ubuntu overlay scrollbars get a minimal scrollbar.
This is the beta version, fixed the big bugs. Now there is only one question left: Right now the GTK3 apps have dark menus, dark dropdown menus, except for too long toolbars, where the last remaining toolbar buttons are shown in a light menu. My original Immunity theme only had dark menus in the Unity panel menus. What do you think? Should all menus have dark background (including gtk2!) or should only Unity panel menus be dark? Or it's only a minor detail, and it's okay to stay the way it is? I'm waiting for your answeres in the comments.