What kinds of gynocological surgical procedures can remove discolored folds of skin around the vagina opening....?

Labiaplasty. Vaginal lips vary. Nothing needs to be done as long as there aren't any problems (eg. Pain with intercourse, tight clothes, thong). Cosmetically some women decide to modify their labia, but should proceed with caution. Most of time results of surgery are good, but sometimes pain can linger and interfere with sex.
Excision. Excision by qualified plastic surgeon or gynecologist if appropriate.