Adjust skin brightness to blend into surroundings

(nsfw:1.5),(boring_e621:1.0),(EasyNegative:0.8),(deformityv6:0.8),(bad-image-v2:0.8),(worst quality, low quality:1.4), (frame, border, film grain, greyscale:1.0),(text, signature, watermark, username:1.0), (nsfw,duo,female,girl,3D,realistic,CG,feral,nude,naked,animal:1.0), (bad anatomy:1.1), bad hands, error, missing fingers, extra digit, fewer digits,(extra penis and testicle:1.3),(Strange penis and testicle:1.3)