Bug 53010 Editor preferences do not take effect on open editors
I-20040224 Go to the Java > Editor > Syntax preference page. Change the keyword color to red. Press Ok. At this point, we use to see the preview update. Not on this build (problem #1). Press Ok, and close the pref dialog. The java editor that was already open did not update. I had to close it and reopen it for the colors to take effect (problem #2)
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/JavaEditor.java
/**
		 * {@inheritDoc}
		 */
		public boolean isDefault(String name) {
			return false;
		}
		/**
		 * {@inheritDoc}
		 */
		public boolean needsSaving() {
			return !fOptions.isEmpty();
		}
		/**
		 * {@inheritDoc}
		 */
		public void putValue(String name, String value) {
			throw new UnsupportedOperationException();
		}
		/**
		 * {@inheritDoc}
		 */
		public void setDefault(String name, double value) {
			throw new UnsupportedOperationException();
		}
		/**
		 * {@inheritDoc}
		 */
		public void setDefault(String name, float value) {
			throw new UnsupportedOperationException();
		}