This can be accomplished with D3.js[1] to bind data to HTML elements -- a div block, in your case -- and color them based on value. D3 is a big library, so you

This can be accomplished with D3.js[1] to bind data to HTML elements -- a div block, in your case -- and color them based on value. D3 is a big library, so you'll likely only need these modules: d3-selection d3-scale [1]: https://d3js.org/ https://d3js.org/