Bug 279658 [UI] ResourceUtility has unused methods
In org.eclipse.e4.ui.workbench.swt.ResourceUtility, the methods - getGradientColors() - getColor() and field - private ColorRegistry COLOR_REGISTRY all appear unused. In a config with CSS, it handles gradients, colors, and the color registry (although the latter is worth discussing), so I'm not sure the purpose of the methods here.
tests/org.eclipse.e4.ui.tests/src/org/eclipse/e4/ui/tests/application/UIStartupTest.java
public void testGet_ActivePart() throws Exception {
		IEclipseContext context = application.getContext();
		assertNotNull(context.get(IServiceConstants.ACTIVE_PART));
	}
	public void testGet_ActivePartId() throws Exception {
		IEclipseContext context = application.getContext();
		assertNotNull(context.get(IServiceConstants.ACTIVE_PART_ID));
	}
	public void testGet_ActiveContexts2() throws Exception {
		IEclipseContext context = getActiveChildContext(application);
		assertNotNull(context.get(IServiceConstants.ACTIVE_CONTEXTS));
	}
	public void testGet_Selection2() throws Exception {
		IEclipseContext context = getActiveChildContext(application);
		assertNull(context.get(IServiceConstants.SELECTION));
	}
	public void testGet_ActiveChild2() throws Exception {
		IEclipseContext context = getActiveChildContext(application);
		assertNotNull(context.get(IContextConstants.ACTIVE_CHILD));
	}
	public void testGet_ActivePart2() throws Exception {
		IEclipseContext context = getActiveChildContext(application);
		assertNotNull(context.get(IServiceConstants.ACTIVE_PART));
	}
	public void testGet_ActiveShell2() throws Exception {
		IEclipseContext context = getActiveChildContext(application);
		assertNull(context.get(IServiceConstants.ACTIVE_SHELL));
	}
	public void testGet_PersistedState2() throws Exception {
		IEclipseContext context = getActiveChildContext(application);