OSM Maps and unpaved roads

Hello,
I have been using Navigator App with the free OSM maps for some years now and the biggest problems I find are related to the OSM information. One of them that I detected is the difficulty to distinguish between paved roads and unpaved roads.
Unpaved roads don't have any different colour on Navigator App Map representation, and there isn't an option on Route Setup to config unpaved roads so I could avoid them.

Can these options be implemented?

Thanks for the attention,
Paulo.