[quote=@Kafka Komedy]
So, [@Ryuzaki], do you believe the color of the souls matter? I was thinking of switching MG's Human Soul from orange to yellow, but I wanted to know if you felt like that mattered any. 

EDIT: Also, would it be okay for MG's arm upgrades to give her some sort of combat boost, like magic bullets or something? She's probably the weakest Soul-Wielder, since she's going up against Undyne, Asgore, The royal archivist (who seems to be a boss monster?) and the trickiest monster in the underground. 
[/quote]

I personally don't think it matters. My headcanon thinks that the soul modes Frisk goes through (Blue, Purple, etc) aren't natural for souls to look, and anything else acts like Red.

Of course, that's just me.