User blog comment:B214/Talk About What You Want! 3/@comment-26345952-20160205215601

you know what I've just noticed. Issei has been seen having both green and red aura in the anime. We know that Issei's aura is red do to him having the BG that has Ddraig sealed in it, but then in certain scenes he has been seen having green aura.

the first I would say when he first tried to use Dress Break on Irina.

The second, IIRC, is when goes over-boost after hearing from Azazel that Vali's power would halve Rias's bust line.

And the last time I can remmember is when he used and oficially awakend Bilingual on all of Diodora's pawn.

I may be overthinking things, but can we say that his green aura is his lecherousness going to the max?