In an attempt I have tried to create something that I thought might be useful at a later date. I have created a a simple version of a night time sky with stars fading in and out.
You can see the code below
//this means the ellipses have no outline
// the first number is the colour the second is the opacity
//this rectangle covers the whole screen
ellipse( random (width), random (height), 3, 3);
then I used
to save several images.
I then combined them in terminal using this code convert -delay 20 -loop 0 *.jpg result.gif.