whats your watering schedule? most likely its over watering or a nutrient problem. can you post a picture?

let it wilt a little then water again if color comes back then you know what it is. sounds like a nitrogen defiency maybe due to over watering.

Hi thanks for the messages.. it's actually continues to be quite strange. I did lay off the watering for a few days and I used a probe and just watered again when it registered 'dry'.

My girlfriend is convinced that the plant isn't yellowing/pale, but she's wrong. :) I'm posting some photos. The most interesting photo is the one that shows several immature Zucchini that have not yet blossomed. Notice how several of them are normal colored, but the one at the bottom of the photo is *bright* yellow as well as the one slightly behind it. It's odd, because i'd say that 35-40% of the immature Zucchini are coming out that color, yet the other Zucchini are just fine. Even the flower on the yellow ones are odd-colored. Almost white and reddish. I've already harvested 3 fully healthy, dark green Zucchini, and one of the photos I'm posting show's another that's about to be harvested (a little over 7 inches).

What do you guys think?? Is it a disease? An odd DNA mutation that's causing some of the Zucchini to come out without pigment? Are they healthy to eat?

Thanks!

Guess I can only post one photo at a time.. this one has the normal looking Zucchini with a normal looking immature Zucchini and a few of the yellow ones. I have more photos.. let me know if you'd like to see those as well.

Thanks again.

Here.. one last photo. A better image of the yellow Zucchini. I apologize for so many posts..