Are you going to add the Office 2013 styles to the TAdvFormStyler/TStyleForm? Including switching to/from Metro?
TAdvFormStyler.Style can be set to tsOffice2013White, tsOffice2013LightGray, tsOffice2013Gray in the latest version. Did you try this? If so, not sure what exactly you want beyond this?
I have many dialogs in one particular app. I tried descending them from TStyleForm and they are close.