I have made three Xatu recolourings in one!
Shadow: A remastered version of my first recolour. I added more shading, and colored the beak and lines silver.
Mineral: The concept of this was from the minerals Gold, Silver, and Crystal (And also the names of the Gen II games).
Flame: Concept is mostly from the colours of fire, nothing much else.
Shadow, Mineral, and Flame Natu/Xatu