JSAUX has a transparent backplate for the Steam Deck, which also comes with taller back buttons and a slightly extended heatsink.
Jsaux Transparent Steam Deck Backplate with Thermal Pad
JSAUX planning colourful, transparent Steam Deck shells
JSAUX ModCase for Steam Deck - Review :: Linux Gaming Central
RGB Illuminate Your Steam Deck: Experience stunning colors with our RGB lighting, transforming your Steam Deck., See Your Inner Steam Deck: A
Transparent Back Plate for Steam Deck RGB & Vents
Transparent Back Plate for Steam Deck RGB & Vents
A fully transparent Steam Deck could soon be yours with these new front plates - The Verge
How to Install Trasparent back cover on Steam Deck JSAUX Transparent Back Plate with Heatsink
See inside your Steam Deck with JSAUX's $30 transparent backplate - The Verge
Transparent Back Plate for Steam Deck
JSAUX Transparent Back Plate for Steam Deck
This Replacement Back Plate Will Give Your Steam Deck A Translucent Back - SHOUTS
This DIY kit gave my Steam Deck the early 2000s clear plastic aesthetic I crave
See inside your Steam Deck with JSAUX's $30 transparent backplate - The Verge
JSAUX Steam Deck Backplate Mod
JSAUX planning colourful, transparent Steam Deck shells