Change color of GeoJSON polyline in dash-leaflet

Question

I am adding two GeoJSON polyline layers to a leaflet window in a dash app using callbacks like this:

dl.Map(children=[dl.TileLayer(), dl.GeoJSON(id="geojson1"), dl.GeoJSON(id="geojson2")])

How do I change the color of the second GeoJSON polyline to yellow?

Answer 1

You can pass the color inside the options parameter, inside a style dict, like this

dl.Map(children=[dl.TileLayer(), dl.GeoJSON(id="geojson1"), dl.GeoJSON(options={"style":{"color":"yellow"}}, id="geojson2")])