As far as the America West side. None of the 757's or 737's have been painted. 319 and 320 have. For HP
express, The crj 900 are being painted but the crj 200 and dash 8 have not yet.
For east coast 319, 320, 757, and 767 have started to get painted. Not sure about the express fleet.
All four of the heritage planes have been painted and are flying around.
As of June 16th, 71 mainline aircraft have been painted in the new colors. (this info comes from the employee newsletter.)