One day someone told me, hey nonstop, your blue! (I was in the red team) And a guy called Glurg shot at me ALWAYS! I got pissed of so I shot back and wondered why the h--k he/she was shooting on me all the time... He/She answered, "Your blue, your blue!!!". Noone else thought I was blue and he was still shooting at me... I got so angry that I left, I mean, what would you do? After you wasted all your ammo on a VERY annoying guy/gal that are wasteing all hes/shes ammo on you! 
Well, this day I got a answer... I was in the red team this day too and I was red too. :) But it was this blue person starting in our camp... I shot and shot and had forgotten of the things me and glurg had in the past... Then when a blue came into our base and started to defending (atleast stading on a place that red should stand on), so I shot and shot all my rockets and some more, but this guy just couldnt die! I thought: "ohh yeah, cheating huh? well, then I ignore you." didnt say anything thought. When I was shoting my rox on the blue guy he answered "okey, then you defence and Ill go for attack...". I said, "no, your blue" he said "no Im aint" and all the other thought he was red too... I thought for a little while cuz when I saw blue guys I didnt know if I had permission to shot or not... well, this is the proof that he really was blue, a blue guy with the blue flag!!! a pretty annoying bug.