Speaking of Zenith, just about anytime that you turn on a TV these days (any brand of TV, mind you), you see commercials telling about Chromacolor. It is touted as a "totally advanced color TV system, (the) first to fully-illuminate every color dot on a jet black background."
Graphic from the Zenith Radio Corporation  

The Zenith Eakins model is one of the new Chromacolor sets currently on sale at the Anchor Department Store. With this set, one can tune into living color programs such as "Rowan & Martin's Laugh-in," "The Carole Burnette Show," "To Rome With Love," "Room 222," "Love American Style," "The High Chaparral," "Ironside," and "The Mod Squad."

Graphic from the Zenith Radio Corporation