Eggplant (aubergine) purple. Fire engine red. Shark-skin silver. Dachshund brown. Even if you aren’t shown the actual color, you can envision its exact shade in your mind. Some colors are inextricably linked to an object, plant or animal. This clever ad campaign for Farber-Castell, which has been producing fine art products, including colored pencils, for professional artists for the past 250 years, relies on the viewer to make that connection. It was created by the Serviceplan agency in Munich, Germany.