Is there a way to add colormap to LayerControl?

First of all incredible progress from the last time I have checked folium, my respect to the team!

I am trying to use some examples from Colormaps.ipynb and it seems like the colormap is not recognised by the LayerControl as one of the layers. My question have two parts:

• Is there a way to make LayerControl aware of the colormap?
• Most importantly is there a way to combine the layer created, say, with GeoJson and colormap, so they are switched on and off together in the LayerControl.

At the end I would like to have 2 layers on one map, but they should have different colormaps.