Those discolored dying leaves are serving little to no use for those plants at this point. You're dead set on keeping them for whatever reason but I still say to get rid of them. Open the buds up and let them get as much light as possible. Flowers serve the same purpose as the leaves and photosynthesis will continue without the dead shriveled up leaves.
You buds are looking pretty good though. I hope you don't follow some previous advice on here and chop them to early.