I’m not a farmer but I spend a lot of time in rural areas. Isn’t it bad when the bales are green? Isn’t that how it gets infected with mold? I thought that was the reason one left it to go brown. Again, not an expert.

It looks like alfalfa hay, and I would prefer both my alfalfa bales and my grass hay bales to be as green as possible. It generally means more of the nutrients are still in the vegetable matter and will have more nutrients than bleached out bales. Brown hay can mean it got rained on after cutting.

Grass does start as green. You can try and actually cut hay early, too. Not well, but. Green wraps exist also. That bale looks okay.