A lot of new mutations are being made in the Green Cheek conures, I'm going to talk about the basic mutations that are readily available. More so than the newer mutations that are just starting to come out.
Yellow- Sided it is also known as Opaline, it is a sex linked gene
Turquoise
Picture is from Google
Turquoise is a very pretty blue, it is a recessive gene
Cinnamon
Picture is from Google
Cinnamon dilutes the body color and makes the beak a horn color vs. the black beak of a Normal, Turquoise or even the Yellow sided, Cinnamon is a Sex - linked gene
The Pineapple Green Cheek is a combination of the Cinnamon & Yellow Sided, Both mutations that is used to make the Pineapple are sex linked genes, the Pineapple is also Sex linked