Grand Julian Spiral
Generates a new random Grand Julian flame based on the tutorial by Stan Ragets found at
and then change it into a spiral in the same way as my log_db unpolar spiral script.
Stan Ragets on Deviantart :
Use different variations in transform 1
Change the values of the last 4 Julians and Gaussian blur on transform 5.
If the centre is too bright, change the opacity in the colour tab of the first transform and last
4 transforms to low value e.g. 0.1.
Move log_db post transform down if centre is too bright.