Ronan took out the clean white square cloth from the cabinet above his head, which served as a handkerchief and cleaned the freshly washed dishes because his wife didn't like the water stains on the cutlery.
Every cutlery item in the house was specifically white, the answer to the question bearing a 'why'...I believe by now you people can comprehend it or at least can guess it right.
Ronan dried the dishes in a peculiar manner by strangely swirling the cloth onto the cutlery, while a feeble humming was greatly echoing in the quiet villa, that even if a needle would have dropped the underworld lord could detect it easily.
After he was done with the dishes by placing them back into the cabinet, the lord took off the feminine apron. When everything in the house was same as before, nothing was changed or renovated after Amaris was gone, how could he use new stuff rather preferring the items of his wife, which she had once used.