Can I set a default track color for an activity for GPX files that are imported?

Planning my trip to Sweden.

I'm importing some GPX files. Some for hiking, some for car 'navigation/guidance'. I'm adding these in a folder called Sweden.

On a folder level I can choose the default color of a track. But I actually want to choose different default colors based on Activity. Blue for hiking, orange for car routes, etc. I think this is currently not possible, right?

I can work around this by creating folders based on activity, but I was wondering if it perhaps is possible to set a default color for an activity. I guess it makes sense to have that, right? When looking on the map for all tracks shown you can immediately spot the difference based on activity.

Is this currently posisble?

Thanks,

Rolf