LAST EDITED ON 03-03-16 AT 08:38 PM (EST)The person on the stretcher appears to be wearing all black.
The only two that jumps out at me as wearing black: Joe and Aubry. Aubry does have the black bottoms, but I think you'd notice some blue if that was her on the stretcher. In this vidcap, you can see Joe with black bottoms and a black top on his shoulder.
Edited to add close-up pic of the person on the stretcher... certainly looks like the clothes match Joe's. Caleb's is red and you'd certainly notice any red clothing in this close-up if it was untouched by the editors.
What gives me pause is that you can see a slight hint of red where the shorts are and there's also a funny look where the restraint is over the shorts - notice the black below the restraint then the skin appears above the restraint.
Ah heck... I don't know. We've already seen them blur out Caleb's tattoo in the IV vidcap, so what's stopping them from tweaking things in the above vidcap?