It's been a long time since I last painted and weathered vinyl tank tracks. Here are the in progress pictures from my current model, an old Tamiya 1/35 1A2 Marder.
They're ok. Not sure the final drybrush of Stone Grey was necessary but they just looked so monochromatic before that application. I think I'll add more pigments once the tracks are mounted to the chassis. Next time I may try Vallejo's Panzer Ace Track Primer instead of the combo of Tamiya's Flat Aluminum + Flat Earth. I avoided using Vallejo since I wasn't sure it could stand up to the abuse of weathering.