Do you have a picture from the back? I would need to see that to be certain of the mutation, but from the front it looks like a Yellow Face type 2 Sky Blue Clearflight Pied. When they have the Pied print on the head it means they are of a pied Mutation
It could be a rainbow. The mutations we can see are type 2 yellow face and opaline if it is also clearwing then it is a rainbow. The spot on the back of it's head could mean that it is split for recessive pied or it could be that it is a clearflight pied (which is a different mutation from clearwing). Looking forward to seeing a picture of it's back
I will get that photo to you tonight. Can anyone tell me if it is a male or female? Its cere looks really blue in the photo but it has turnd more white, I think it's a girl. What do you meen by rainbow coloration? If i wanted to have babies that looked like this bird what color would I have to mate it with?