Themochromic inkiamapangidwa ndi makapisozi ang'onoang'ono omwe amasintha mtundu mosinthika.Pamene kutentha kwakwera kufika pa kutentha kwapadera, pigment imachokera ku mtundu kupita ku mtundu wina (kapena kuchokera ku mtundu wina kupita ku mtundu wina).Utoto umabwerera ku mtundu woyambirira pamene pigment imakhazikika pansi.