That dip is produced in black, red, green, and yellow. If you can't find any of that Tool Dip, then check for some liquid tape. That's small cans of liquid vinyl that have built-in brushes in their lids. The stuff is designed to coat splices in electrical/electronics wiring. It, too, comes in different colors--including yellow.
Both of these products can be found in the Eastwood catalog and the MicroMark catalog. The small cans of liquid tape are alot lower cost than the tool dip.
HEY, I just remembered a THIRD source material. I've seen these cheapy little vinyl repair kits in Wal-Mart, NAPA, and other places that contain real small plastic containers of thick liquid vinyl for spot repairs in upholstery. I don't know if yellow is one of the colors in the kit. Mix some of the red and green to get a sickly yellow. ( I think ) The nose covers we used in the AF were closer to International Orange. The covers for the proximity fuse was a matching color, but made of padded vinyl and velcro. The nose covers were small celled foam rubber.
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