Upgrade Java Swing Project

Hi Everyone,
I am looking forward for some guidance from all you guys here.
I have been assigned the work of upgrading Java Swing project. The upgrading also involved some improvements in look and feel of the tool.
Currently the tool looks very simple/basic and needs some good over-haul.
As basically I am a J2EE guy, I dont have much idea about the Swing Open-source API's that I can utilize for the same.
If anyone has good idea about the API's that can be utilized or suggestions for the improvement of the tool look wise then please let me know.
Thanks,
Gaurav

user7668872 wrote:
..I have done some research and I have come across.. That is an interesting term to describe the 2 PLAFs I mentioned on this very thread. O_o
..some themes like metal(being used currently), Windows and nimbus.
I implemented all these themes one by one in the project, but not sure if I can use any of these themes and extend them in some ways to look like the mock-up.
The Synth Look and Feel.
"Creating a custom look and feel, or modifying an existing one, can be a daunting task. The <a href="http://download.oracle.com/javase/7/docs/api/javax/swing/plaf/synth/package-summary.html">javax.swing.plaf.synth</a> package can be used to create a custom look and feel with much less effort. You can create a Synth look and feel either programatically or through the use of an external XML file. The discussion below is devoted to the creation of a Synth look and feel using an external XML file. Creating a Synth L&F programatically is discussed in the API documentation."
There are also a number of existing custom PLAFs. E.G. See this excellent summary at SO on the thread Look and feel in java.
What will you suggest me :)<ul>
<li>When in doubt, try it.
<li>Be good to your mum.
</ul>

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