That's Alitalia's livery on the other side. CO and AZ had a marketing agreement (since expired?) a few years back, and they painted a Continental DC-10 with the colors of CO on one side and AZ on the other, much like the BA/SQ Concorde, and somewhat like the NW/KL DC-10. I'm not sure if there are any other pictures of it on airliners.net. Anybody have some?