Does anyone elses enemies sometimes turn blue, using FWE?

Doesn't happen often, but sometimes in combat, one of the enemies will be all blue lol Its not a huge deal, but I was just wondering if anyone else encountered this.
Game Skyrim Forum
http://www.gamesas.com/
http://www.gamesas.com/does-anyone-elses-enemies-sometimes-turn-blue-using-fwe-t275297.html