The icons of the Tool,
System, and
Pen Panels are GIF images.
They are kept in the file painter.jar, which is a regular ZIP archive.
To replace the icons:
paniter.jar to paniter.zip and unpack it with any ZIP utility.paniter.jar.Some Notes:
icons you have to specify
the directory name using the parameter icondir:
<param name="icondir" value="myicons/">This parameter can be set for each Panel individually.