There is nothing more beautiful in the sky than a colorful rainbow after a storm. Sometimes we catch just a glimpse and other times the colors are vivid and bright. It can be hard to tell exactly how ...

Imagine you’re in IKEA, looking for a plastic kitchen stool. You find one, but—darn—it’s turquoise, which just doesn’t match your home color scheme. No problem. You tell a salesperson, who pushes a ...

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