Solution

Blue. 

The second he starts to utter words out of his mouth, my heart races. I look at my hands and they are already shaking. He kept this from me for a couple of days. This is something that we should both be worried about. This is scarfing me because he is not supposed to resonate with magic. He doesn't have it inside him. the fact that the book took a liking to him, terrifies me. makes me scared that there is more to do.

"I don't want you to worry, that is why I didn't tell you. I am sure that once we leave this place. it will all stop.'' He mutters so casually. He doesn't seem as worried as I feel right now. my mind is in a fog. There is so much going through my head and suddenly his fear for staying in the coven makes more sense.

He was pushing to leave because he didn't want to cause any more problems.