You want a small look and feel and it should be open source? Or a professional one?
I discovered a list of several Java look and feels here.
Here is one more L&F. Do you know even more?
To set up the Look and feel in normal Java applications the following code is necessary:
try {
UIManager.setLookAndFeel(
UIManager.getSystemLookAndFeelClassName());
} catch (Exception e) {
}
Here is how you set up the Look and feel in Spring Rich Client: go to the application-context.xml and replace the lookAndFeelConfigurer:
<bean id=”lookAndFeelConfigurer” class=”de.timefinder.core.ui.KunststoffConfigurer“/>