What happened to my spartan?

So I finished a game of griefball and was greeted to this strange sight
https://account.xbox.com/en-us/screenshot/25629baa-fed8-437c-abdd-843f520f8e1f?gamerTag=odst%20trooper12&scid=1370999b-fca2-4c53-8ec5-73493bcb67e5

is it a texture glitch like the pink spartans of the beta?

It is just a lighting glitch. Most of the time you Spartan will appear slightly darker. But sometimes that happens. Depends on the map you play.