/usr/share/afterstep/desktop/icons/redbar.xpm is in afterstep-data 2.2.12-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | <gradient angle="90" width="1" height="23"
colors="#7A3144 #1A070A"/>
|