# spec requiredspec is a JSON data in vchart format, as shown in the example above.
# optional paramswidth = '500px'height = '500px'colors = ['#EB6F02', '#76BEC8', '#D44977', '#EF85A7', '#675DAE', '#B6BC65', '#829E0B', '#A6A6E1'];
render_chart(obj, width, height, colors)