I have noticed that sora changes color in the monster inc world though i wasnt able to figure out on what that depens if there is a system at all. I though it could be the health bar but he stayed the same color even after i reached a save point. Magic dosent seemt to be it either since i Sometimes dint use any magic for a long period of time at all. 

It's the forms.  Each time you use a Keyblade Transformation and change form, Sora's Monster form changes color.  I believe it's

Orange for Power

Blue for Element

Yellow for Guard

Green for Speed

White for Ultimate

and I think a different shade of Yellow for Second, been a while since I used that form though so I don't remember.

Edited February 23, 20196 yr by Azure Flame

1 minute ago, Azure Flame said:

It's the forms.  Each time you use a Keyblade Transformation and change form, Sora's Monster form changes color

I see thanks bud