See the attached image below... The JavaFX SDK install and welcome panel use vertical banners which are being stretched. Note the pixelation in the steam on the Java cup, and the stretched Oracle logo.
In the current installer, the content area is 309 pixels high but the supplied banner is only 276 pixels high (available here: http://xdesign.us.oracle.com/projects/javaFX/2.0/SDK/images/ga_release/javafx_sdk_side_banner.jpg). This is the height that was spec'd (see: http://aseng-wiki.us.oracle.com/asengwiki/display/ASUsability/JavaFX+2.0+SDK+Installer+UX+Spec#JavaFX2.0SDKInstallerUXSpec-JavaFXSDKWelcomeWindow)