Done by me with a fifth of scotch and a soldering iron. The SM-LED under the redline portion of the tach is still the stock orange one so it looks quite red as opposed to the rest of the gauges now being green.
You should be able to find someone that will make you 220 gage faces or has them in stock. I would love them, but just don't mess with stuff that works. Waiting to see how much it cost you. I get a lot of wows when people bend in and look at the 180, I can't imagine the reaction you would get to 220's