Looking for rear panel in a color not shown on your site

Hello,

I need to replace the back panel for my Xbox One Controller (1708) and your site only shows replacement pieces in the standard white. My controller has a dark grey back panel and I would prefer to get a replacement that matches/nearly matches the original color.

This is the exact version: https://www.amazon.com/Xbox-Wireless-Con...

I was simply wondering if that color is available, but not listed, or if I will have to go searching for it elsewhere. Any information or links to offerings in that color would be greatly appreciated.

Thank you.