Starbucks was founded in Seattle in 1971 and the baristas' green aprons have been a part of the ... or button-up shirts can also be worn. For pants, "any shade of khaki, black, or blue denim ...

At the time the policy was meant to embrace looks that go beyond classic "black/white tops with khaki pants under a green apron," allowing color patterns like charcoal, gray, navy and brown.