As you can see, the standard wear is a light or dark grey sweater woven with kevlar and fireproof threading. The suit contains the patches appropriate to the personnel's rank. Also personell are required to wear a clip on ID tag containing pbasic information, a binary identification code, and his/her security clearence. The pants are double buckle dark grey SWAT style combat pants with similar weavings for the guys, and a kevlar knee length black skirt for the girls. As for footwear, street style black boots are required for both sexes. This wear is required for all but the lab workers, who wear very informal personal clothes with a lab coat bearing the above information.
The lowest ranking personnel are the go-fers and interns, with no official designation of rank and security clearence Red (all security clearence works according to the color band spectrum, starting at Red...)
Next come the standard workers, nurses, and technicians. Again, they have no real rank designation, but are considered security code Yellow, giving them access to the more sensitive areas.
The test subjects are breveted to 2nd Lt. rank in the eyes of the UN, and are considered clearence Green. Senior technicians and nurses (like Noa) often have Green clearence as well.
Security Personnel are considered Blue clearence, not to mention they are the only personnel cleared to possess on premisis firearms (an Mp-25 semi-auto pistol with 2 reloads). In addition to the uniform, Security are also clad in riot helmets and vests, but that's only for very sensitive areas. It's worth noting that, in case of emergency, that every security officer keeps a loaded AK-74 rifle in secret lockers throughout the complex and knows how to use it! The only deviant from this rule is Maj. Barbara D'Sangelo. She often wears her old fatigues and her M1911A1 sidearm as well as keeps a crimson suit of body armor along with a hideous array of unauthorized firearms in her locker. However, being the Tactical Advisor and clearence Violet, she can get away with it..
And while we're on the subject, the top scientists and administration behind Project Orpheus are Violet clearence.
As for Mr. Tourin himself, well, he can go wherever he likes without question, and NOBODY will say anything! Not that he does....