You can download my current TYP file (with Park polygons) for CNNA 2015.1 here
Code:
Please Login or Register to see the links
If you have the Mapsource version of the map installed on your PC, go to C:\ProgramData(hidden folder)\Garmin\Maps\City Navigator North America NT 2015.10.gmap\ and rename the original TYP file to I0000CFE_original.TYP for backup.
Copy there the file you've downloaded.
Use Mapinstall (or Mapsource, its just for testing the view) to choose some US map tiles to send to your device.
The map is now send using the modified TYP file.

Work is still in progress and this will not be my final TYP, but you can download it and tell us your opinion.
I don't live in US but after so much testing, I've become much better in ....geography


To view or edit the TYP file you need to download and instal [Only registered and activated users can see links. ]



Tip
Mapsource and Basecamp have cache memory.
If you change the TYP file (or edit it and save it) and open the program, the old colors are shown.
To empty the cache memory change the Detail Level from Highest to Lowest to Highest and the new colors are shown!