Style modifications on runtime

[jsanz]

The initial trigger for this issue was:

This more a discussion topic, but could we embed the logic to generate the desaturated style into the ems client so we only have to maintain the default style and maybe even going further, consider to parametrize the process so we can modify the map to go not just to gray but to other colors based on user needs?

But we could take a more generic approach and discuss bigger modifications to the styles upon parameterization, so a few ideas:

• Desaturating into gray or any other color similar to what Mapbox Studio offers when creating a style based on their monochrome basemap
• Identify key colors in the style and allow to apply custom palettes, similar to what Mapbox Studio offers in the colors section of their map components interface, but very likely highly simplified
• Map style layers to themes to allow them to be disabled: labels, boundaries, land use, transport network, etc. similar to Datawrapper locator maps interface.
• Support multiple languages

Mapbox studio monochrome themes


Mapbox studio color components


Datawrapper locator map themes


[jsanz]

This was implemented at https://github.com/elastic/ems-client/pull/105