'Clear' does include all those yellow, pink, tan (etc.) liquids that you can see through. The ones to question are the ones you can't see through because they're milky. If it literally looks like plain coffee, no problem. If it looks like coffee with cream or a bottle of watery milk, it's worth finding out why. I've seen it in mostly citrus flavors, and it often indicates it contains oil, which is a problem in the lungs.