Awhile back I sent a message to Wendy Froud; asking about the red markings that appear on Kira’s legs (i had thought they were scars). And that they no longing appear on her legs after she had her essence drained.
Realm of Froud
John, sorry for the delay in responding. I finally connected with Wendy and here is her response. Sarah Froud
This is a question I’ve never had about Dark Crystal before.
Kira’s costume changed because she had her “essence” drained. She was wearing footless tights that were patterned (not red veined legs) in most of the film but when her dress and cape faded to pale “bone-like” colors, her tights also faded to a light color. Her clothing was meant to be a part of her very nature and not just clothing she put on (if that makes sense). The pod people also “faded” as their essence was drained.