Bob La Londe wrote:

Not knowing the principal of how it determines which colors to use

It recommends colors entirely based on the theory that the most visible
color is the most likely to be eaten by a bass. That theory itself is
highly suspect, in that the vast majority of the things a bass is
conditioned to recognize as food in its natural environment are pretty
well camoflauged and don't qualify as high viz.

But the ONLY thing it measures is light intensity. It simply ignores
light temperature, contrast with existing background, water COLOR (as
opposed to clarity) and all of the other myriad factors that can alter
the outcome.

IMHO, even if it was accurate (which the original wasn't), and even if
it could find the actual highest visibility lure color (which it can't,
as long as it doesn't take additional factors other than candlepower
into effect) the theory that the color that can be seen best is most
likely to be eaten is still highly suspect.