[longsangstan]

Actually at the beginning I was thinking whether to make a webapp or a chrome extension...

A chrome extension is more suitable as a dev tool while a webapp is more easily sharable...

Thanks for your suggestion!

[ac4tw]

Agreed--though much of the core code is shareable between both targets.

When I first discovered the prototyping capabilities for colors/themes/samples in the Chrome dev tools, my mind was blown away b/c of how fast I could iterate. A plug-in might take that to the next level. It's hard to say without me surveying more of what's out there and in use--I get the sense that at a certain level, teams rely more on tools like Sketch, inVision studio, Framer etc. for this.