Invisible playlist background

Hi, everyone!
I was searching for a lightweight combination of winamp and foobar2000 today, and look what I found! Xion proved to be everything I asked for, and I immediately investigating the skinning possibilities (..wow!).
After a few hours of photoshopping I was getting close to what I desired - with one single problem. I couldn't get the playlist background completely transparent. I tried various settings with layer opacity and colors, but I wasn't satisfied (either the list was too hard to read, or the background was too easy to spot) That was about 2 hours ago.
Since then I've basically trashed my .psd due to trial and error, and searched the web - including these forums - for some clue how to make the background invisible while leaving the text at full opacity.
You're my last hope, guys! Is it possible to have the playlist background at zero opacity and only have the text visible? Have I missed something obvious in my frenetic searches?
I'm happy for any help or answers you can provide.
I was searching for a lightweight combination of winamp and foobar2000 today, and look what I found! Xion proved to be everything I asked for, and I immediately investigating the skinning possibilities (..wow!).
After a few hours of photoshopping I was getting close to what I desired - with one single problem. I couldn't get the playlist background completely transparent. I tried various settings with layer opacity and colors, but I wasn't satisfied (either the list was too hard to read, or the background was too easy to spot) That was about 2 hours ago.
Since then I've basically trashed my .psd due to trial and error, and searched the web - including these forums - for some clue how to make the background invisible while leaving the text at full opacity.
You're my last hope, guys! Is it possible to have the playlist background at zero opacity and only have the text visible? Have I missed something obvious in my frenetic searches?
I'm happy for any help or answers you can provide.