@zranger1 posted code that essentially does a short version of what I suggested above: takes hsv, converts to rgb and then just uses the RGB directly to light the led. (I was figuring you might want to continue with hsv, so you’d convert back, but @zranger’s use case is likely true in 99% of the needs out there.
@wizard, I think the “setting” is basically 3 sliders (RGB) which light up the first few LEDs as 100% and then you lower the sliders to make the “whitest” combo (so in my example above, you’d slowly turn down red and green, until the LEDs were the most white), save that adjustment, and then it would apply that small correction behind the scenes on all patterns.