Icon Changer - Click on a template button
Icon Changer - Click on PL/SQL generated button
PL/SQL generated button:
About
Developed by Hans-Peter Scholz, Tobias Arnhold (http://apex-at-work.blogspot.com/)
EMail: tobias-arnhold@hotmail.de

Example: http://apex.oracle.com/pls/otn/f?p=AAW_PLUGINS:ICON_CHANGER

Including: Image Button template

License: This plug-in is dual-licensed under the GPL and MIT licenses.