Sweet, I’ll see what I can do. At the very least I can get it working so that you can set the color values in the json and use the keyboard shortcuts. I haven’t had a chance to work with Sketch input fields yet but it might be easier than I’m imagining.
Quick update! I got the basic idea working. I’d like to tidy up a few things before the initial release but its getting close to done. (You’ll notice that the fill/border properties in the sketch UI don’t update properly. I have to reset something to get them to switch.)