Vivian had a great post about modifying your iPhone with a DIY brushed metal back, sourced from an OEM vendor. It looks like someone in Hong Kong wanted something to customize their iPhone 4 in an even more unusual fashion. Check out this transparent glass panel mod which you can do yourself (if you dare ruining your phone).
The modification was apparently created by removing the front glass panels and stripping the black paint coating with paint thinner. It appears "wkmarken" also used this technique to then create his own white iPhone with a custom paint job within. Add "crazy-brave iPhone modder" to the list of Type of iPhone Owners.
[via Geek & Hype]
Other iPhone modifications: