When herpes blisters pop, they can release fluid containing the virus. After popping, it's possible for the blister to form a crust or scab over time. The color change you may observe could be from clear fluid initially released turning yellow as part of the healing process. It's important not to pick at these sores and allow them to heal naturally while keeping them clean and dry. If you have concerns about your symptoms or need more information on managing herpes outbreaks, don't hesitate to reach out for support!