continuous scale node color

[hannaschmueck]

Hi!
I would like to use a normalised continuous colour scale to map node colour i.e. to degree or betweenness centrality. I have access to these values as node attributes, but I could not find an easy way to make this work.
Is there a systematic way to implement d3.scale or chroma.js solutions for achieving this?

See example from Cytoscape (Coninuous Mapping on BetweennessCentrality)