Hi, I have a question regarding some of the Golden liquid acrylics bottles. It seems that some colours contain (burnt sienna & Van Dyke brown e.g.) contain "a chemical known to the State of California to cause cancer". Of course I'm not planning to eat (or drink) the paint, but does anyone know how cautious one should be? Should I avoid getting excess paint on my skin? Or maybe try to avoid and breathe it in? Thanks in advance for your answer. Kind regards and looking forward to progress in this exciting course! Linda