Yes, a drawing I have done out of my head for Crazy Colour challenge. I tried this on my iPad. There is violet in this drawing so I put this one in it.
There are more sophisticated drawing machines that are like paper in the computer industry but here I will leave it with what I have.
I have not copied it and it probably is crazy but never mind. It is what is with no preconceived thought of what I was going to do.