Hopefully just genetics. When a bud gets pollinated, the pistils turn more dark brown and it looks a bit different. If the buds stop bulking up and putting on weight for a while AND orange hairs means it probably got pollinated. It isn't the end of the world and you should still have some awesome bud when she finished. Hermie isn't contagious (unless it's stress induced and you stress out all of your plants) so this one probably won't hermie and be able to push through fine. happy growing! 👊