Aria and Alan were sure Rian wasn't just identifying those colors because if he had seen black and white, he would have immediately told them about it. They weren't living in a black and white movie for him to be oblivious of it.
Aria grabbed the tab from Levi's blazer and rushed inside. Alan followed her inside in a slight panic. Both didn't notice Roxy slumping on the chair trembling profusely. The fact was they prioritized Rian, might be the situation or might not be.
Nathan noticed Roxy but he wasn't sure what to say so he preferred silence. Levi didn't know to calm anybody so he stood silently.
---
Inside the testing room, Rian complained as soon as Aria entered, "Little devil, do I look like a kindergarten kid. He is showing me VIBGYOR colors. I am asking him to show the tones of it."
Doctor: "..."