Spirograph simulation? or…who knows.
In this case there is no solid background. And the colour takes the previous mode (?). Feels like 3D in some point.

Knob 1 : Arms
Knob 2 : Points per arm
Knob 3 : Twist
Knob 4 : Colour of the figure
Knob 5 : Colour of the lines on the backgroud.

Audio In make the figure bigger.
Press The Persist Toggle button for more pleasure.