The Google Charts API now offers "Material design" versions of some of their charts. There's more information here:
https://developers.google.com/chart/interactive/docs/gallery/linechart#creating-material-line-charts
Plotalot supports Material charts with the "Design Pattern" option, which allows you to select the Classic or Material options. Currently, only line and bar charts are supported in the material design pattern.
The material charts are still "in beta" - which means they are not finished. Simple charts seem to work well and look great, but some of the options that work for classic charts don't work in material charts, and some charts just don't work properly at all in material mode. It's easy to switch between the two modes, so you can try your charts in both modes to see which works best and which you prefer.
Material charts do not support downloading as PNG images and if you configure a PNG download for a material chart, you'll see an error below the chart.
Presumably the material charts will improve over time.