Q.My Bish Contender Green Beans Have Brown Veins All Over Them.
I have been growing bush contender green beans for years and have never seen this before. It’s not rust. The bean leaves are turning a dark yellow/brown color and most of the beans have the brown veining throughout the whole bean.

Certified GKH Gardening Expert
Unfortunately, your photos did not come through. I am unable to see the damage.
You can take samples up to your local extension service, and they can be of assistance. Here is a link to help you find the closest to you: