title: Change bar color in chart.js depending on value
body: <p>I want to create a bar chart using chart.js (www.chartjs.org). The bar fill color should change depending on the value. </p>
  
  <p>E.g., if the value is less than 10, color is green, 11-15 means yellow, and 16-20 is red.</p>
  
  <p>Is it possible to do that with chart.js, and how?</p>