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By default, the Look and Feel of your operating system will be used in the GUI. In the ''Preferences'' dialog, you can choose some more window themes. If you download and embed the [http://www.jtattoo.net/ScreenShots.html JTattoo library] in your classpath, 13 additional looks and feels will get available. Two of these window themes provide a dark color scheme.
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<td>[[Image:defaultlaf.png|thumb|Default Look & Feel]]</td>