Bug 263878 [CSS] Implement active + selected tab colors for photo demo
examples/org.eclipse.e4.demo.e4photo/src/org/eclipse/e4/demo/e4photo/Library.java
package org.eclipse.e4.demo.e4photo;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;
import org.eclipse.core.databinding.observable.IObservable;
import org.eclipse.core.databinding.observable.Observables;
import org.eclipse.core.databinding.observable.Realm;
import org.eclipse.core.databinding.observable.masterdetail.IObservableFactory;
import org.eclipse.core.databinding.observable.set.IObservableSet;
import org.eclipse.core.databinding.observable.set.WritableSet;
import org.eclipse.core.resources.IContainer;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IResourceChangeEvent;