My dog LOVES the UPS man, who happens to be black. 'Course it helps that he's a dog lover himself and is really nice to her.
It's just our UPS man she doesn't like. We were sitting in traffic next to a UPS truck and I thought she might go nuts, but instead she poked her head out the open window and grinned and wagged her tail at the driver (he was black, too.) She loves the Orkin man (black), the stonemasons working next door (Hispanic), the furnace repairmen (white), the local Jehovah's Witnesses (black) (they're not too sure about her though), the mailman (white), and the roofers (Hispanic). I can't think of anybody else she doesn't overwhelm with glad jumps, smiles, and wholesale tail wagging. She's just a happy loon with a funny thing about that one poor UPS man . . .
She also has Airborne Ears . . .