Final answer:
The color of VDS smoke can vary based on the substances being burned. It can be white, gray, black, or colored depending on the materials.
Step-by-step explanation:
The color of the smoke produced by VDS depends on the substances being burned. In general, VDS smoke can be a variety of colors, including white, gray, black, or even colored. For example, burning organic materials, such as wood or paper, typically produces white or gray smoke. On the other hand, burning chemicals or certain metals can produce colored smoke, such as blue, red, or green.