Bug 81292 [Preferences] Message area should be disabled when empty
200412152000 My GTK theme has a textured background by default. There is a section of the preference dialog next to the Default/Apply buttons that does not respect this. I suspect there is an empty label/text widget that has had its background colour set manually. Screencap forthcoming
bundles/org.eclipse.jface/src/org/eclipse/jface/preference/PreferencePage.java
return size;
        Control control = getControl();
        if (control != null) {
            size = doComputeSize();
            return size;
        }
        return new Point(0, 0);
    }
    /**
     * Contributes additional buttons to the given composite.
     * <p>
     * The default implementation of this framework hook method does
     * nothing. Subclasses should override this method to contribute buttons 
     * to this page's button bar. For each button a subclass contributes,
     * it must also increase the parent's grid layout number of columns
     * by one; that is,
     * <pre>
     * ((GridLayout) parent.getLayout()).numColumns++);
     * </pre>
     * </p>
     *
     * @param parent the button bar
     */
    protected void contributeButtons(Composite parent) {
    }
    /**
     * Creates and returns the SWT control for the customized body 
     * of this preference page under the given parent composite.
     * <p>
     * This framework method must be implemented by concrete subclasses. Any