JSAUX has a transparent backplate for the Steam Deck, which also comes with taller back buttons and a slightly extended heatsink.
JSAUX TRANSPARENT BACK PLATE FOR STEAM DECK INSTALLATION AND TEMPERATURE CHECK
See Your Inner Steam Deck: This transparent back cover will let you see all the hardware of your Deck. Thanks to the transparent plate you’ll be able
Transparent Back Plate for Steam Deck
JSAUX planning colourful, transparent Steam Deck shells
JSAUX planning colourful, transparent Steam Deck shells
JSAUX ModCase for Steam Deck - Review :: Linux Gaming Central
Transparent Back Plate for Steam Deck RGB & Vents
These Steam Deck accessories will ramp up your gaming experience - Reviewed
Jsaux Backplate Fixed - 50% better performance
JSAUX Transparent Back Plate Compatible for Steam Deck, DIY Clear Edition Replacement Shell Case Compatible with Steam Deck, Buttons with Three Different Heights and Feel - PC0106 [Crystal] : Video Games
You Can Buy A Transparent Back Plate For The Steam Deck
Jsaux Transparent Steam Deck Backplate with Thermal Pad
JSAUX Transparent Back Plate Compatible for Steam Deck, DIY Clear Edition Replacement Shell Case Compatible with Steam Deck, Buttons with Three Different Heights and Feel - PC0106 [Purple] : Video Games
Hardware Review: JSAUX's Colored Transparent Backplates for Steam Deck - Hackinformer
New Steam Deck Accessories - JSAUX Transparent Back Plate Review
A fully transparent Steam Deck could soon be yours with these new front plates - The Verge