Thermochromatic paint is made using liquid crystals, which exhibit unique optical properties and change colors at different temperatures. These liquid crystals can be sourced from chemical suppliers like Sigma-Aldrich, although their specific formulas are often proprietary. While some users have attempted to extract liquid crystals from defective LCD displays, creating a thermochromatic paint with a wide range of colors requires experimentation. Products available online include thermochromic pigments that activate at specific temperatures, but finding liquid crystal-based paints with a full spectrum of colors is challenging. Experimentation is key for achieving the desired effects in thermochromatic applications.
