Matches my Token icons. For Windows 7, looks best when 'small icons' is checked and taskbar is at the bottom of the screen.
Pictured here with theWin7 visual style AeroPlain, find it here: [link]
Option 1: use a resource editor like ResHacker and replace bitmaps 6801, 6805, and 6809 in explorer.exe - look elsewhere for a tutorial, I'm not very good at explaining it.
Option 2: If and ONLY IF you're using Windows 7 RC build 7100 32 bit / x86 version, you can TRY my modified explorer.exe included in the zip - no guarantees.