I just assume everything is green. I rarely see blue and never see purple. Seriously I have had only 3 maybe 4 purple drops ever. Are they real. Are they extinct. I'm considering searching for the yeti in Russia next patrol, I think there is more likelyhood of finding it than a purple engram lmao Edit: within 5 minutes of playing last night I got 3 purple engrams. One was a weapon. Two ended up being coins. Coincidence???