Which model of bike - I/S or Std/Tourer?
If the latter...Show Chrome offers replacement switch housings in chrome. Buy some and cart them off to the powdercoater.
Or go to eBay and buy OEM housings then do same. Which you'll have to do regardless if you have an I/S and don't want to have the bike apart for any length of time while your parts are being finished.
Levers - a GL1800 setup will fit. Should be able to find them in OEM black. For that matter, an entire master cylinder set may work. You'd have to check the clutch and brake switches for fit, but if those parts line up you're good to go otherwise.
Show Chrome also made a black switch block housing (pictured below) that fits our bikes. I think at least one aftermarket outfit offered black reservoir covers for Honda master cylinders. Or, one can powdercoat a set of aftermarket chromed ones.
