[Feature Request] Accept Luminance or Lightness in API Call

[blujedis]

While I'm sure there will be many requests for various things, this is a great little tool, I would argue the only thing missing is to allow a param in the API to toggle between luminance and lightness. Even if only to toggle on or off for all colors.

Outside of that, for what this is intended to do I'm not sure much more is really required. Heck I'd be satisfied with the default being Luminance as that's more consistent with Tailwind's default scale IMO.

Happy to contrib some time for this :)