Bug 13507 LinkedPositionUI has a reference to SWT.COLOR_RED
LinkedPositionUI(ITextViewer, LinkedPositionManager) - org.eclipse.jdt.internal.ui.text.link.LinkedPositionUI has a reference to SWT.COLOR_RED which will be unreadble if the user sets their background colour to Red. We will be adding a getErrorText colour to JFaceColours in build >20020411. You may want to use that.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/link/LinkedPositionUI.java
if (event.stateMask == SWT.SHIFT)
				previous();
			else 
				next();			
			
			event.doit= false;
			break;
		
		case 0x0D:
			leave(UNINSTALL | COMMIT | UPDATE_CARET);
			event.doit= false;
			break;
		
		case 0x1B:
			leave(UNINSTALL | COMMIT);
			event.doit= false;
			break;
		}
	}
	/*
	 * @see VerifyListener#verifyText(VerifyEvent)
	 */
	public void verifyText(VerifyEvent event) {
		if (!event.doit)
			return;
		IRegion region= fViewer.getVisibleRegion();
		int offset= event.start + region.getOffset();
		int length= event.end - event.start;
		
		if (!fManager.anyPositionIncludes(offset, length))