Just noticed this. So far I only have 1 bridge officer. Can't modify his appearance. Also in the tailor window, the zoom in and out buttons don't work for the boff. I can use the mouse wheel though.
It's probably because the boff seems to have unique outfit pieces that aren't available to your own character. The jacket, pants and boots he is wearing are nowhere to be seen for my own character. The boff is wearing what appears to be the Mercenary 01 chest gear, the Mercenary 03 belt, and looks like pieces of a kit on the right thigh and wrists. The pants look like the Panels and Pockets but modified to have a big pocket on the left leg.
For my own character, the Mercenary 03 belt is in the list but with a price of 550 Zen. I have purchased the Mercenary off duty outfit on the Holodeck sever but c-store stuff doesn't transfer over to the test servers.