I'd be sending them back and requesting a refund. I've come across "shopped" games with the same problem. I think the smaller rubbers are either old rubbers, or poor imitations. Every single NEW rubber I've bought have been the same whiteness. I've only bought rubbers from RTBB or Pinball Resource myself. sometimes I buy the kits - and the colors are always the same.

+1 . I'd request a refund . I've only bought rubber kits from PBR and colour is always the same for all rubbers .