Thanks for the response.

There has been no mucus and he appears in perfect health besides the frequent yawning. Sometimes it looks more like he is stretching his jaw than a yawn i noticed. When his mouth was open I was perfectly still except for the expression on my face. It honestly looked to me like he was trying to get a reaction out of me. He got a look like "lets see what happens if I do this". I'm probably crazy but that is what I saw.

I'm not terribly worried about the change in his coloring. I was just hoping someone might know what would cause the sudden color shift. Curious really.

I am going to keep an eye on him though for any signs of RI distress.

Thanks again