Other good info
Just considering this a workaround until Garmin units support track-segmentation.
Garmin users need to be aware that the unit's maximum number of tracks is 50 tracks.
Fork has 22 tracks.
LOP has 18 tracks.
Rayburn has 16 tracks.
Toledo Bend has 1 track(one track-segment).
Note:
Homeport's GPX support includes a GPX-extension for track color(default dark-gray) which I set to black. Therefore if you import and export GPX, then the track color might be persistent. I don't know about GDB.