N932AT, painted in Milwaukee Brewers “retro” colours at the Hartsfield-Jackson Atlanta International Airport.
This was in 2010. At that time, AirTran had just been purchased by Southwest, and their Boeing 717s were eventually sold off to Delta and the 737s were repainted in Southwest’s colours.
This example? According to planespotters.net, it’s living at Litchfield Airport outside of Phoenix, possibly waiting the call-up from Delta to work in their fleet of McDonnell-Douglas products.