Remove faces based on legend color order

[architect.civil5 (ay)]

i try to Remove faces based on legend color order
but
There is a mistake in deleting the order of the faces. Does anyone have a suggestion for the correct execution of this algorithm?

legend color is:
face remove.gh (271.5 KB)

[Mahdiyar]

Colors.gh (18.5 KB)

[architect.civil5 (ay)]

thanks