I saw on a chart that the theory is green jades come from orange. I don't agree.
I saw a picture from the original breeder once of the jade with blue shrimp and yellow shrimp in the background. If I were to guess, I think he spent a long time trying to create the mix to make jade. Although this would wind up in plenty of wilds, maybe one out of a zillion *may* at random chance combine the genes just right to display both yellow dots and blue dots to make a greenish. Selectively breeding those would give more chance at green, but would also explain why so many culls are thrown.
An extremely high quality of jade shrimp is spectacular, but few and far in between. Look at the pic below and you can see the yellow specks, with what I consider to be a blue overlay:
Green jelly is green tissued like a BV.
The Nessie Strain I created have a dark green pigmentation without yellow pigment:
And in Malaysia, there is a Lime Green neo that I haven't seen stateside: