From their origin, form and emptiness are one. Color is produced or transformed out of emptiness through the "combination of causes and conditions"; all colors are generated or transformed from emptiness through a certain "combination of causes and conditions"; that is to say, color is the result of emptiness under certain causal conditions. Representation or appearance or appearance. Form comes from emptiness; all form has emptiness. Emptiness is the origin or essence of form.

Extended information:

In the most important classic of Mahayana Buddhism, "Prajnaparamita Heart Sutra", "Form is emptiness and emptiness is color" is an important principle of Mahayana Buddhism. This is an important idea in Buddhism. Simply put, form refers to all things and phenomena that can be seen or cannot be seen, and these phenomena are caused by cause and effect. Emptiness is the essence of things, and everything comes from nothing.

Reference materials: Baidu Encyclopedia--Color is emptiness? Baidu Encyclopedia--Color is emptiness Emptiness is color