Thanks for the help. I reached out to the ebay seller and for the color(White doesn't work) and price it might be better to just replace. Just my luckI've spoken to Kohler and they have no trim left for this valve. "Discontinued Kohler" on Ebay has some white trim sets left.
NO VALVE! BOXES MAY HAVE POOR CONDITION. Trim only, requires valve to complete installation. (LOCATION: DP-18).www.ebay.com
Before you dive into a remodel. You might look into having that new white fixture chromed. I've had to change the finish on a number of fixtres from Polished Brass to actual Gold plating. Just 1 option that may save you from opening walls.price it might be better to just replace. Just my luck