An aisle at Best Buy with an employee standing at the computer and a Geek Squad sign in the background.
The employee is wearing a blue shirt.
The employee might be in a different color because he's on the Geek Squad, and might not have on the typical Best Buy blue shirt.
Unless you know the colours of the Best Buy uniforms there is no reason to know that they are in a blue shirt.
just because he is wearing a blue shirt don't mean he is an employee