Introduce a new road-style "pale"

[njam]

Describe the idea (required)

I'd like to propose adding a new road-style "pale" to the default map-style, which is defocusing roads by rendering all roads in the same bright grey.

This new road-style improves the readability of overlays like bicycle paths, hiking paths, public transport routes etc.

Tell us about the expected behaviour (required)

When using the road-style "pale" I expect the road network that is rendered by default to have a non-colorful style, to not disturb other overlays rendered on top that use colors.

For example, let's say I enable the bicycle app profile with the default map-style. It's very difficult to know which of these colored lines are bike paths, and which are road types:

With the "pale" road-style instead I can easily identify bike paths, basically any colorful line:

More examples:

Default street style	Pale street style
Base map
Public transport (tram + bus)
Bicycle routes
Base map zoomed out

Tell us about alternatives you've considered (required)

Alternatively a different map-style could be used, but what I've seen there's no map-style available that defocuses streets, but still shows all relevant information as a base map.
It'd be possible to create new map-style, but that would be much more work and means a lot of functionality will be duplicated, and probably not maintained well (see also this ticket: #18807).

Context (optional)

The road-style "pale" would be useful for these existing tickets:

• Overview of railway connections when zoomed out #17373
• Map Style="Public Transport" #3168

I've created an initial pull request adding this new road-style "pale" here: osmandapp/OsmAnd-resources#1085

[DmitryAlexei]

https://osmand.net/docs/user/map/vector-maps#road-style

[Friptick]

Amazing work @njam. This really closes the gap with Organic Maps on public transit. Thanks so much.