Color Innovation

“Is that magic!” The old lady shouted, pointing frantically at a rapidly changing image.
“It’s called television,” the young man groaned and turned from the display case.
“But televisions are in black and white.” The old lady shook her head.
“Not anymore. They make them in color now.”
“I can see color!”
“Yeah, that’s what I said.”
“How does it do that? Is it magic?” She pressed her nose against the glass.
“No. All televisions are like that now.”
The old lady clapped her hands with excitement. “How long have they been selling these?”
“Fifty years, Grandma. You own one.”