Potent sulfur can be used to apply black patina on copper block variants.

In the real world, liver of sulfur is used in metalworking to patina copper black, so what if potent sulfur could serve a similar purpose in minecraft? I think this would be a nice addition not only because it gives people another use for their extra copper, but it also gives potent sulfur another use besides applying nausea. (As a bonus, it also finally gives us black doors and trapdoors!)

Specific details:
-Patinaed copper blocks will be mostly black, with a subtle gradient between dark purple and green.
-Patina is applied by placing it directly above underwater potent sulfur (either in the water, or one block adjacent to the surface in the cloud of gas).
-Patina can be scraped and waxed, and already oxidized or waxed blocks will not patina if placed above potent sulfur.
-There is only one stage of patina, unlike the 4 stages of oxidization.
-If unwaxed, the patinaed block will naturally oxidize into the weathered variant, then the oxidized variant. If waxed, the patinaed block will not oxidize.
-There will be patinaed variants for each copper block type, including chains and lanterns. Patinaed copper bulbs will have a light level of 10 (between exposed and weathered), but all other blocks will have identical properties to the base version.