So we were sitting in the living room last night and the gas stove (Jotul Allagash) comes on. Of course the flame is blue which it always is on start up and as the stove gets warmer it changes to blue/yellow. The wife says "I wish it would stay blue". So it got me to thinking. If momma likes it blue, couldn't I just shut the air shutter all the way off and have a blue flame? From what I've read here the stove would be more efficient. The only reason for the yellow is for realism right? If I were to shut the air shutter all the way and made the flame blue it wouldn't hurt the stove any, right? Thoughts please.