Electonics salesman's worst nightmare.

I had an appointment which somehow ended up not happening, so I ducked my head into the local RadioShack. My brother's got a cell phone that's threatening to conk out on him, so I figured I'd do some research. The RadioShack salesman comes up and asks if I need help, so I tell him. He proceeds to show me telephones, and the fun begins...

Salesman: "This is a much better phone. It's got a color screen."
Me: "Y'know, I've never understood the advantages of a color screen on a cell phone."
Salesman: (spluttering) "You ... you don't ... whaddaya mean? (whips out his own phone) Look! Look at what you can have on the screen, and the menus. See? Color. *beep* Color. *beep* Color. On a black-and-white phone, all you get is text."
Me: "Yeah, but what's the battery life on one of those phones?"
Salesman: "I don't know, but look, see? Four bars on signal, four bars on battery. And most people plug in their cell phones every night..."

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(Ed: the above is the result of the Irregular banging his head against his keyboard.)