noun
thermocolor; thermochromic color
Refers to a color that changes with temperature, often used in materials, inks, or coatings.
このマグカップはサーモカラーで、熱い飲み物を注ぐと色が変わる。
This mug uses thermocolor; the color changes when you pour in a hot drink.
サーモクロミック is the adjective 'thermochromic', while サーモカラー is the noun for the color itself.
Loanword from English 'thermocolor', a compound of 'thermo-' and 'color'.