var opts = {
  lines: 12, // The number of lines to draw
  angle: 0.15, // The length of each line
  lineWidth: 0.44, // The line thickness
  pointer: {
    length: 0.9, // The radius of the inner circle
    strokeWidth: 0.035 // The rotation offset
  },
  colorStart: '#6FADCF',   // Colors
  colorStop: '#8FC0DA',    // just experiment with them
  strokeColor: '#E0E0E0'   // to see which ones work best for you
};
var target = document.getElementById('foo'); // your canvas element
var gauge = new Gauge(target).setOptions(opts); // create sexy gauge!
gauge.value = 1250; // set actual value
gauge.maxValue = 3000; // set max gauge value