Sorry to say this but v13 doesn't seems to solve the readability problem.
I think the first step is to put in white all cards that do start as neutral, because it's part of the problem.
It's when you start a game and half of the map is white or worse 80% if it's with "fog" that you have problem in finding all your troops.
For me the problem is not the card bg color but the red and black figures, red above all.
They are graphically too similar with armies numbers and as you can not change the numbers you maybe can act on figure, but I don't know how for the moment.
De gueules à la tour d'argent ouverte, crénelée de trois pièces, sommée d'un donjon ajouré, crénelé de deux pièces
Gules an open tower silver, crenellated three parts, topped by a apertured turret, crenellated two parts