It's similar to Highlight or even Color, except the app doesn't need to be open.

ENGADGET

Unlike other jewelers, he uses a dark metal alloy for the settings to highlight the gems' color.

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Mr. Nguyen said the company might eventually sell premium services to local businesses like restaurants, which might be able to highlight photos of popular dishes or daily specials, or learn more about which Color-using customers come to the restaurant most often.

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