Yes, they have reduced fat milk too. I wouldn't rely on the carton colors since they can use different suppliers sometimes. So, they offer whole milk, reduced fat (1% or 2%) and then the skim milk. Read the labels carefully. I've grabbed the wrong milk more than once.
If you are in the dining room and not the Windjammer make it clear to the wait staff that you want whole milk. If you don't give a preference they will often grab whatever is convenient to them.