It can change from dark grey to green, depending on the temperature. 

OrbitGear has been producing a range of quality and stylish PPE products like face shields and masks during the coronavirus pandemic. Now, they have dropped the W110-J React “Uranus” jacket. This shell jacket changes colour, depending on the temperature it picks up. When cold, the fabric remains dark grey, turning green when the temperature increases. The fabric used to create this piece is heat reactive. It can be ordered on OrbitGear’s online store for global delivery for R5 500.