theme String

The chart theme. This can be either a built-in theme or "sass". When set to "sass" the chart will read the variables from the Sass-based themes.

The supported values are:

• "sass" - special value, see notes
• "black"
• "blueopal"
• "bootstrap"
• "default"
• "highcontrast"
• "metro"
• "metroblack"
• "moonlight"
• "silver"
• "uniform"