I know you changed the tracks from being white to being black because of visibility issues on light ground now we have the same problem on dark ground.
I would suggest an easy solution: Use your black track symbols and give them a bold white borderline so we will be able to see them clearly on every terrain.
"I am a Paladin!"
>OMG, Malthus, there are no damn paladins in Battle Brothers...<
"OK, OK! Then I´m a wrecked down minstrel drunkard pretending to be a paladin, singing so wrong in the midst of battle that even the undead run in fear... Better?!"