Hi Charlie,
Something which is missing, but might be a great feature for CS Forms is an HTML email generator based upon the fields in the form. I have a custom-built generator, which I think works amazingly (for my needs, at least!). I wonder if it is something which could be incorporated natively, even linked to create the fields as they are added to the form. Styling uses global colors, but added manually. I have the working HTML, but no way to share it with you here.
I think you will like the concept and suspect you can very simply make it a great new feature - after your own tweaking. 
How can I get the HTML to you?
Thanks,
Christopher