"What do you mean red??" Based on the fact his vision was still as dark as an unending abyss, Cassian couldn't comprehend what his best friend was trying to insinuate by saying his eyes were red, and knowing Orson for a really long time since their spring days, he could easily detect if his friend was lying and trying to pull a stunt on him or not.
So far, it doesn't sound like a lie, yet it was impossible to be considered true.
"I know what I'm saying, and It's…. it's sorta freaking me out." Orson hesitated in his words as he took another silent step back away from Cassian, finding those eyes to be unnaturally cold-blooded. "Did you do something to your eyes? Did you use an unknown paste again???"