Hijab Part IV: Combat Hijab.
I settled on a highly advanced hijab that can assume the color of any environment or outer clothing. Example: A young woman dons a leather jacket, chaps, black leather gloves, knee-high boots ,and a motorcycle helmet with a visor. She has dressed in protective gear for a motorcycle ride. The hijab underneath would change its color accordingly.
Example II: A muslim "amazon" is fighting in polar regions of a planet. Her outer body armor is snow white to match the environment. The armor and hijab change color to greenish-brown when the girl steps on to the ground in warmer climate.
Cool, huh?