New shield requests in AAMaps?

[Molandfreak]

There are various auto tour routes for the National Historic Trail system which have their accompanying spade logos on the component highways. Examples include the Mormon Trail and the Pony Express Trail, both of which are fully marked within AAMaps. Other routes such as the Lewis and Clark Trail do not have accompanying shields, and I have just started mapping the auto tour route for the Trail of Tears in OSM. Is there a procedure to add these accompanying spades to the sign inventory?

[Scott5114]

The shields are the responsibility of the OSM Americana project at: https://github.com/osm-americana/

[NE2]

Are line colors (specifically which networks get orange) set by Americana too?