This painting is another experiment. I used Cad orange - ultramarine blue + white. I've had a tube of cadmium orange for 25 years and never knew what to do with it - so I grabbed it and some ultramarine blue to make this painting. It was a fun experiment and very challenging. Turns out cadmiums have been replaced by azo colors because the azo components are non-toxic. Cadmiums are toxic - I don't recommend that you go out and buy any. I just figure I should use it up and be careful in the process. I am a believer in mixing my oranges from different yellows and reds. I think I'll try the same idea mixing my own orange and see what happens.