Let’s see if someone can help me out here! I had...

Hi @ThatoneAKguy! Keep on flushing, the dark green coloration of your leaves tells us that your plants had too much Nitrogen for the past weeks, I think you're just experiencing senescence which is the natural fading of a plant entering its late flowering stage. You can remove the most affected leaves to improve light penetration. Hope this will help, keep us updated and happy growing! 👊