On Mon, 2 Aug 2021 04:52:27 GMT, Prasanta Sadhukhan <psadhuk...@openjdk.org> 
wrote:

>> test/jdk/javax/swing/plaf/nimbus/TestNimbusJTextPaneColor.java line 74:
>> 
>>> 72:             if (frame != null) {
>>> 73:                 SwingUtilities.invokeAndWait(frame::dispose);
>>> 74:             }
>> 
>> `frame` is accessed on main thread without synchronisation.
>
> NimbusLookAndFeel is customized look and feel but I don't see mention of 
> default background color to be white in spec..If it is not set explicitly, 
> background color is drawn in "NimbusBlueGrey" background which seems to be 
> same as what is used in SwingSet2 demos in Nimbus L&F

This is not specified since the color of L&F are implementation details, for 
Nimbus, some of them are described here:
https://docs.oracle.com/javase/tutorial/uiswing/lookandfeel/_nimbusDefaults.html

So when you delete the color from the xml, does the SwingSet2 still use the 
same color as before? Then for what the color in the xml was responsible?

-------------

PR: https://git.openjdk.java.net/jdk/pull/4930

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