The buttons i'm currently using for a dark theme (with the workaround of adding a border):
http://www.mediafire.com/?97jox9j2a14ip1mCorresponding to:
1) View: Show track browser
2) General: Locate selected track in windows explorer
3) General: Locate selected track in computer node
4) Send to: External application (Spek)
5) View: Theater mode
6) Tools: Auto-tag by track. Update missing tags