Specifying arcs with different colors in Datamaps.js

paths.js

var paths = [
  {
    "origin":{"latitude":42.350939,"longitude":-71.05229},
    "destination":{"latitude":35.466872,"longitude":139.622747},
    "options": {"strokeWidth": 2, "strokeColor": "rgba(0,0,255,0.33)"}
  },
  {
    "origin":{"latitude":42.350939,"longitude":-71.05229},
    "destination":{"latitude":39.908617,"longitude":19.581969},
    "options": {"strokeWidth": 1, "strokeColor": "rgba(0,0,255,0.33)"}
  }
  ...
];

// http://datamaps.github.io

The only problem with that suggestion is that

  {
    "origin":{"latitude":42.350939,"longitude":-71.05229},
    "destination":{"latitude":35.466872,"longitude":139.622747},
    "bananas": 2776
  }

Isn't that much of an improvement from the already possible:

  {
    "origin":{"latitude":42.350939,"longitude":-71.05229},
    "destination":{"latitude":35.466872,"longitude":139.622747},
    "options": {"strokeWidth": 2776}
  }

Thought I think there is room for something like:

  {
    "origin":{"latitude":42.350939,"longitude":-71.05229},
    "destination":{"latitude":35.466872,"longitude":139.622747},
   "fillKey": "50+"
  }

  var bananatrade = new Datamap({
    element: ...
    fills: {
       "lt10": { strokeColor: "rgba(0,0,255,0.1)", strokeWidth: 1},
       ...
       "50+" { strokeColor: "rgba(0,0,255,0.34)", strokeWidth: 3}
     }
   });

Realistically, you are only going to have a few strokeWidths, zero to four or so before the map starts looking bad.

Hm, that's a fair point.
As for using the fillKey, ah, I hadn't thought to define the arc widths that way! I think that would be really spiffy!