H/S (LED) Fade from/to zero

Is there a way or trick with Hue/Saturation fades from or to zero to prevent all the LED colors from illuminating and thus going to white during the fade?

I've experimented with changing the fade time on Saturation to zero which produces a different, but still undesirable result. And I assume it's possible when using the I Red, I Green, and I Blue attributes, but. . .
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