Using LD Palettes

I've been fuddling around with it, but  am I correct in thinking  I can only  manually apply a palette to only a preset?

I'd like to make a button to apply a palette to selected group faders to make those selected a palette "white" look.

Is the better way about this to make a preset the return to white, so it can be recalled/toggled in 0/0 time?

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