Hi, I am trying to make a rainbow drawer so that a line drawn continuously cycles through colours of the rainbow. At the moment I have a program that draws the line as a rainbow, but it doesn't cycle through the colours. I am new to Programming so I'm not sure of the best way to do this but I was thinking of using the color mode 'HSB' to constantly change the hue, is there a way to apply this to the 'whole display' if you get what I mean?