A thermal-chromatic element includes a sealed enclosure, an isolation layer, a first heating element, a thermal-chromatic material layer, a second heating element and an absorption material layer. The isolation layer is disposed in the sealed enclosure and separates the sealed enclosure into a first chamber and a second chamber. The first heating element is configured to heat thermal-chromatic material layer in the first chamber. The thermal-chromatic material layer is disposed in the first chamber. The thermal-chromatic material layer is able to change color by releasing and absorbing water. The second heating element is configured to heat absorption material layer in the second chamber. The absorption material layer is disposed in the second chamber.