"I Can't keep track of how much the wind mana is changing around us. Walker, the mana that is making up the bridge shifts over and over." Gil had managed to catch on to the fact that the bridge they walked on was less solid than what it appeared.
While the bridge seemed to be solid and looked like a bridge to the party, they all had begun to realIze that they were not seeing the same things.
Su had mentioned that the bridge had a solid white color in her eyes. But that was most likely the fact that she spent a lot of time around light mana. Since she had gained the bond with Midnight and accepted the dragon aspect of who she was, Su had acclimated to all manas. But because she had trained with healers and Rise, she had gained a better understanding of light mana.