Hello, any progress on that?
Displaying plotly express maps with dark mode displays them in dark mode, even after trying different things to either force white mode on my map (doesn't work), or set white mode for plotly at the top of my notebook (does not work either). 
I know I can switch to 'light mode' for each of my maps from a button (upper right corner on each map), but every time I rerun the notebook or the cell showing the map, it's back to dark mode... a bit annoying...