My vagina is becoming strange

it is very possible that it is natural. only a physical exam can however tell.

Many women have colored genitals. It darkens after puberty. It can be even or uneven, just on the edges or bigger. It can become red, wine red, dark purple,dark brown or even black. The shin on your outer lips are the same as a man's scrotum skin. It is thus just as leathery and a man's scrotum suffers from the same discoloration.

It can also lok like an 8. Around your vulva, over your perineum and around your anus. Still all natural.