Saw the actual uniform in ORD yesterday on a wear tester. The jacket lining is purple as well and the color is a much lighter blue than it appears. To me it looked like a repeat of the uniform from the '90's only with silver piping, purple lining, and a purple tie. The wear tester said the colors were not "set in stone" so who knows what the final look will be.

If you think purple is not an appropriate choice please file a PDR with ALPA.