In /usr/share/redhat-config-rootpassword, there is an empty pixmaps dir. It doesn't hurt anything, but it should be removed from the spec file so it is not created or the images should be moved into it so it is actually used.
Fixed in redhat-config-rootpassword-1.0.1-4. Actually, I was installing the png to /usr/share/redhat-config-rootpassword instead of putting it in the pixmaps dir. I now install the png in the pixmaps dir. Thanks for your report.