Rainbow 1

For the top quadralateral fill, the colour mode is set to HSB. The settings are as follows:

Hue:-
"Y" ranges from -24 to 24 which is too much range so multiplied by .55 redudes the range to: -13.2 to 13.2, this brought no change except when the "saturation" and "ballance" altered settings are introduced.

Saturation:-
Changed the equation from Y*.1 to Y/.1 but there was no apparent change except for the changes to "balance" (see below)

Balance:-
When -y*.1 was changed to y*.1, together with the settings above made this slight rainbow effect which was on the line for what I'm aiming for.