I just wanted to update this.
I jumped the gun on assuming my CL cross pullet laid this brown egg. I was wrong. I stayed outside all morning today to watch this coop to try to find out who is laying what. Well Im so happy to share that the olny chicken to go in the coop and use the nest box was a "olive egger"pullet she stayed in the box for over and hour and when she came out this brown egg is what I found. YAY!
Which means the green egg I found a few days ago belongs to one of my CL cross pullets
Im so excited.