The green_univ2.zip file you have requested: Mods / Single Player / Lt Commander's Collar Mod - 1.05mb is not available. Perhaps try browsing all files for the game Star Trek: Elite Force II and upload any files you want to share or are missing. This is the only information we could locate:
This is the version 2 of the green collars mod. Now, they are not green, butdark teal. Jurot now has a green hazard suit. The green and not teal is intentionalfor easy identification. Also, all the uniforms are variants and have a smallstripe on the jacket by the collar that is the same color of the department. Thiswas only seen in VOY: Life Line.
Better than any explanation I could of come up with.