[Bick in New Zealand]

I remember here years ago, when Firestone was making tires and exporting them, you couldn't buy the whitewalls for some reason, but someone quickly discovered they were covering the whitewalls with a black solution to disguise them for the local market. Out with the prepsol / thinners, and presto you had a set of whitewalls, which were the rage on As and early V8s at the time.