Ferdowsi had a designer spend hours tweaking the shade of Dropbox's button inside the file system on a Mac.

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The 57-year-old Silvana, reserved and understatedly elegant in her slacks, button-down shirt and ponytail, started out as a model and swimwear designer for her uncle in the 1970s, and today oversees the women's collections.

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The push-button design "is earmarked for Lincoln only, " says Gary Braddock, interior chief designer for Ford and Lincoln vehicles.

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