bright green growth on a bud in last couple days, towards end of flower

These are male pollen sacs, not a good thing, your plant is starting to hermie. One of the biggest worries with a hermie (a plant with both female and male parts) is that the pollen sacs will burst and pollinate your flowers. This will "seed" your buds. In other words, this will cause your buds to start focusing on producing seeds. Hopefully, I answered your question and remember " Happy Growing and Free your mind one puff at a time ".