It's a demo bug found on the PIT build build/net/jcg-x86-01/export3/SwingBuilds/2004-06-16-int.tiger

Comments from Sundaranathan on the bug:

          In JColorChooser Demo in SwingSet2 click on
background/gradient1/gradient2/perimeter button the JColorChooser is
launched. Now you selected some color and click on "cancel" button the
selected color is applied to background/gradient1/gradient2/perimeter.
But this should not happen and was not happening in previous PIT and b51
also. This happens because till previous PIT "showDialog" method was
used to create and show JColorChooser but in this PIT the demo code has
been changed and "createDialog" method is used.

       In "showDialog" if "ok" button is pressed the selected color is
returned and if "cancel" is pressed then null is returned. But in
"createdDialog" if i press "ok" or "cancel" the JColorChooser is hidden
and nothing else is done. I just had a look at the source of
JColorChooser and found that only component is hidden in case of ok and
cancel. So that is why this problem is.