hey Marty, I think your refering to the Tiger with winter camo? I usually paint the tracks by first spraying them flat black. Then I dry brush them with raw umber, for that really dark rust thats underneath the bright rust. Then I follow up with some rust pastel chalk. Just gring some off on a piece of sand paper and cover the whole thing really well. Use as much as youd like. Then I give it a coat of dullcoat to seal it. When you apply the dullcoat, some of the chalk tends to disappear, thats why I say to apply the chalk heavily. thanks for the compliment too :) hope that works for you