I tend to go against 'regulations' and run modern black treads, based on availability and safe performance, as I use my bike everyday. My old Smoke and Dart disintegrated long ago sadly. However, I'm tempted to suggest some new Onza Canis or Ibex amber/skinwalls having seen these. Or any new repros of old classics. But Fluffychicken is right – go with what you feel is best for you and suits the scheme of your bike – what colour is the frame btw?