Thanks for that Bill .. as someone else remarked - it will be a most useful time saver.
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Glad it can be of use to you Raymond.
It occured during a bit of playing around using the Alt-Rainbow style for a blend. Starting with a blue gel button and blending between it and a clone. The alt rainbow created some nice colour combinations.
That lead to creating another colour gel button and trying the blend from the blue to a mauve with alt rainbow. Then blue to green, then mauve to green and it could go on and on.