Here are some pictures of green opalines and normal greens for comparison. The whole head or hood of the green opaline baby will become green as it matures.
[Metamorphosis] This is a Medium Green Opaline Baby. You can see the red on the top of the forehead as well as the red on the rump, and the color of the rump is the color of the body vs it being blue. He filled out very well after he matured and just had his first clutch of babies. He also placed for the 1st time a the Wisconsin Cage Bird Club Show in 2006.
Here is another picture of the Medium Green Opaline. This male is actually brothers to my American Cinnamon Opaline hen. He placed for the first time at the Wisconsin show in 2006.
[Metamorphosis] Here is a picture of a Green baby.
Here is a picture of a Green Violet baby.
Here is a picture of a Green Adult.