Well, in broad strokes... [The explanation isn't as in-depth as it could be, but it's still enough technobabble that's only very vaguely touched on in canon that it's probably best to handwave it. The word "pseudochordate" is used at some point, and on several occasions she uses a term that's almost cartoonish in its juxtiposition of complexity and informality before catching herself and correcting to something that translates much more smoothly to human medical terminology. Generally, though, while many of the anatomical structures seem to have as much in common with insectoid anatomy as mammalian, most of it's not a great deal different in function from human anatomy.]

... as for color - there's a number of points of intraspecies variation that are directly linked to hemochromatic pigmentation. Which is something of a misnomer, the pigment is most concentrated in the blood, but it's present in most bodily fluids to some degree, and starts saturating the irises of our eyes as we approach physical maturity. [In demonstration, she takes off her glasses, meeting Angela's eyes directly and unfiltered for the first time - deep jade green against golden sclarae, the color matching the scattering of green freckles across Jetshard's cheekbones.] The color-linked traits include lifespan and susceptibility to psychic influence, among others, which unfortunately has lead to the adoption of the hemospectrum as a social caste system in addition to a biological one. Jade's distinctive enough that I've made it a habit for most of my adult life to obfuscate my exact hue and let people assume I'm one of the more common colors to either side.