Maybe some city official may be stupid enough to try it.
But the good people of Lubbock will know what to do when someone vandalizes their Walk of Fame.
They'll remove such unsightly graffiti.
Currently, ther is no move to add Nat to the Walk of Fame. She may be celebrated by the "arsty" crowd here, but the City has not expressed any desire to honour her especially in light of the drubbing that she took in local radio stations; the C&W played parodies of her music and boycotted the Dixie Dinks.
Actually, it could be quite amusing. It would probably quickly take on a yellow coloring, that would return, regardless of how many times it was cleaned. :^)