Works great! Following the instructions here:
However, if you install the KDE4 kdeartwork package, any remaining kde3 packages, such as k3b & amarok, will uninstalled and aren’t available for KDE4 on Debian yet.
See the screenshot that highlights transparency:
However, this does seems buggier than on my laptop running Ubuntu. For instance, whenever I type in the brower (such as writing an e-mail using gmail), the pager flickers off and on, and sometimes the whole bar on the bottom flickers on and off. I’ve tried setting KWIN_NVIDIA_HACK=1 and that didn’t help.