Adding a colormap to a Layer or FeatureGroup

Hopefully, this is just a case of I'm-Doing-It-Wrong.

I'd like to be able to associate a colormap with a specific layer (e.g. GeoJson or TopoJson layer), independently of say, another layer of just markers or just a different choropleth layer. This way, if I deselect a layer in the LayerControl, both the GeoJson layer and the associated colormap go away (which also lets me have a separate colormap per Geo/TopoJson layer).

I've tried adding the colormap to the layer itself as well as adding both the layer and colormap to a FeatureGroup, but neither of these approaches seem to work.

Have a look at: https://github.com/eddies/folium/blob/59f88bca397a600b138abfc21591373ac3a66a78/tests/test_colormap_layer.py for an example (sorry, it's not a Jupyter notebook--long story about problems w/ Jupyter and virtualenvs)

Commencez par tests/test_colormap_layer.py et exécutez l’exemple existant pour comprendre comment les colormaps sont associés aux couches GeoJson, TopoJson et FeatureGroup. C’est terminé lorsqu’un colormap de couche suit cette couche dans LayerControl, disparaît lorsque la couche est désélectionnée et que des couches distinctes peuvent conserver des colormaps distincts.