Entry for the Periodic Table of Elements Skin Contest, Neon 10!
(I actually did some research for this now I feel like a nerd lol)

It's a play on Neon being a noble gas, so they're wearing noble-ish armor and clothing. Ik I'm hilarious. The X on the chest is for the Roman numeral 10, which is Neon's atomic number. The hair is reddish orange because that's the color of the element Neon when it's concentrated through a vacuum tube, and the same thought process went into the half-opacity visor. The detailing in the armor is in neon for obvious reasons.

That's about it, merci pour votre temps! :)