Not bad. However, any decent front-end guy will likely hack his way directly in the browser to see how things would actually look like. Build an extension that

Not bad. However, any decent front-end guy will likely hack his way directly in the browser to see how things would actually look like. Build an extension that allow them to snapshot their CSS/DOM hack on actual code (I believe there are already a few doing similar things) and send that back to users instead of a simple document. Probably more actionable for the potential customers.