Slime
They will still be just fine, maybe a little more breakable than when they were green, But they will still slime over in the same amount of time maybe even a little faster. The only advantage to them being green is that they attract fish quicker when green because they are alot larger and they have not had a chance to sour. Just my opinion. I sink structures for bass and crappie alot and when they are green they attract fish immediatly, don't know why but it does. When the Green leaves start to slime over the fish seem to pull off of it, I have been told its because the green is rotting and souring, once the green has rotted off of the structure the fish come back. This is just what I have been told, dont know if it has been scientifically proven or not.
You can't beat the taste of them ole fried SLABS N TATERS!!