diff --git a/src/mightypork/utils/annotations/DefaultImpl.java b/src/mightypork/utils/annotations/Stub.java
similarity index 94%
rename from src/mightypork/utils/annotations/DefaultImpl.java
rename to src/mightypork/utils/annotations/Stub.java
index c5e574c..6e9d7a2 100644
--- a/src/mightypork/utils/annotations/DefaultImpl.java
+++ b/src/mightypork/utils/annotations/Stub.java
@@ -18,6 +18,6 @@ import java.lang.annotation.Target;
 @Documented
 @Retention(RetentionPolicy.SOURCE)
 @Target(value = { ElementType.METHOD })
-public @interface DefaultImpl {
+public @interface Stub {
 	//
 }
diff --git a/src/mightypork/utils/eventbus/clients/BusNode.java b/src/mightypork/utils/eventbus/clients/BusNode.java
index 02884a7..44b7bdf 100644
--- a/src/mightypork/utils/eventbus/clients/BusNode.java
+++ b/src/mightypork/utils/eventbus/clients/BusNode.java
@@ -5,6 +5,7 @@ import java.util.Collection;
 import java.util.LinkedHashSet;
 import java.util.Set;
 
+import mightypork.utils.annotations.Stub;
 import mightypork.utils.eventbus.BusAccess;
 import mightypork.utils.eventbus.EventBus;
 
@@ -17,7 +18,7 @@ import mightypork.utils.eventbus.EventBus;
  */
 public abstract class BusNode implements BusAccess, ClientHub {
 	
-	private final BusAccess busAccess;
+	private BusAccess busAccess;
 	
 	private final Set<Object> clients = new LinkedHashSet<>();
 	private boolean listening = true;
@@ -27,9 +28,43 @@ public abstract class BusNode implements BusAccess, ClientHub {
 	/**
 	 * @param busAccess access to bus
 	 */
-	public BusNode(BusAccess busAccess)
+	public BusNode(BusAccess busAccess) {
+		setBusAccess(busAccess);
+	}
+	
+	
+	/**
+	 * Create without a bus access. Bus access should be set using the
+	 * setBusAccess() method.
+	 */
+	public BusNode() {
+	}
+	
+	
+	/**
+	 * Handler called when bus access first provides a valid bus instance.<br>
+	 * The node may now eg. subscribe to the bus.
+	 */
+	@Stub
+	public void onBusReady()
+	{
+		// do stuff
+	}
+	
+	
+	/**
+	 * Assign a bus access. If the buss access provides a buss, the onBusReady()
+	 * method will be called.
+	 * 
+	 * @param busAccess the assigned bus access
+	 */
+	public final void setBusAccess(BusAccess busAccess)
 	{
 		this.busAccess = busAccess;
+		
+		if (getEventBus() != null) {
+			onBusReady();
+		}
 	}
 	
 	
@@ -109,6 +144,7 @@ public abstract class BusNode implements BusAccess, ClientHub {
 	@Override
 	public EventBus getEventBus()
 	{
+		if(busAccess==null) return null;
 		return busAccess.getEventBus();
 	}
 	
diff --git a/src/mightypork/utils/eventbus/clients/RootBusNode.java b/src/mightypork/utils/eventbus/clients/RootBusNode.java
index 39849e2..bc11f6c 100644
--- a/src/mightypork/utils/eventbus/clients/RootBusNode.java
+++ b/src/mightypork/utils/eventbus/clients/RootBusNode.java
@@ -1,7 +1,7 @@
 package mightypork.utils.eventbus.clients;
 
 
-import mightypork.utils.annotations.DefaultImpl;
+import mightypork.utils.annotations.Stub;
 import mightypork.utils.eventbus.BusAccess;
 import mightypork.utils.interfaces.Destroyable;
 
@@ -14,12 +14,25 @@ import mightypork.utils.interfaces.Destroyable;
 public abstract class RootBusNode extends BusNode implements Destroyable {
 	
 	/**
+	 * Create with a bus access.
+	 * 
 	 * @param busAccess access to bus
 	 */
-	public RootBusNode(BusAccess busAccess)
-	{
+	public RootBusNode(BusAccess busAccess) {
 		super(busAccess);
-		
+	}
+	
+	
+	/**
+	 * Create without a bus access. It should be assigned later.
+	 */
+	public RootBusNode() {
+	}
+	
+	
+	@Override
+	public void onBusReady()
+	{
 		getEventBus().subscribe(this);
 	}
 	
@@ -29,15 +42,17 @@ public abstract class RootBusNode extends BusNode implements Destroyable {
 	{
 		deinit();
 		
-		getEventBus().unsubscribe(this);
+		if (getEventBus() != null) {
+			getEventBus().unsubscribe(this);
+		}
 	}
 	
 	
 	/**
-	 * Deinitialize the subsystem<br>
+	 * Deinitialize the node (subsystem)<br>
 	 * (called during destruction)
 	 */
-	@DefaultImpl
+	@Stub
 	protected void deinit()
 	{
 	}
diff --git a/src/mightypork/utils/math/animation/Animator.java b/src/mightypork/utils/math/animation/Animator.java
index fe4e6f6..66921ee 100644
--- a/src/mightypork/utils/math/animation/Animator.java
+++ b/src/mightypork/utils/math/animation/Animator.java
@@ -1,7 +1,7 @@
 package mightypork.utils.math.animation;
 
 
-import mightypork.utils.annotations.DefaultImpl;
+import mightypork.utils.annotations.Stub;
 import mightypork.utils.interfaces.Pauseable;
 import mightypork.utils.interfaces.Updateable;
 import mightypork.utils.math.Calc;
@@ -120,7 +120,7 @@ public abstract class Animator implements NumBound, Updateable, Pauseable {
 	}
 	
 	
-	@DefaultImpl
+	@Stub
 	protected abstract void nextCycle(NumAnimated anim);
 	
 	
diff --git a/src/mightypork/utils/math/color/Color.java b/src/mightypork/utils/math/color/Color.java
index 5529e8a..c848904 100644
--- a/src/mightypork/utils/math/color/Color.java
+++ b/src/mightypork/utils/math/color/Color.java
@@ -244,4 +244,37 @@ public abstract class Color {
 	{
 		return new ColorAlphaAdjuster(this, multiplier);
 	}
+	
+	
+	@Override
+	public int hashCode()
+	{
+		final int prime = 31;
+		int result = 1;
+		long temp;
+		temp = Double.doubleToLongBits(b());
+		result = prime * result + (int) (temp ^ (temp >>> 32));
+		temp = Double.doubleToLongBits(g());
+		result = prime * result + (int) (temp ^ (temp >>> 32));
+		temp = Double.doubleToLongBits(r());
+		result = prime * result + (int) (temp ^ (temp >>> 32));
+		temp = Double.doubleToLongBits(a());
+		result = prime * result + (int) (temp ^ (temp >>> 32));
+		return result;
+	}
+	
+	
+	@Override
+	public boolean equals(Object obj)
+	{
+		if (this == obj) return true;
+		if (obj == null) return false;
+		if (!(obj instanceof Color)) return false;
+		Color other = (Color) obj;
+		if (Double.doubleToLongBits(b()) != Double.doubleToLongBits(other.b())) return false;
+		if (Double.doubleToLongBits(g()) != Double.doubleToLongBits(other.g())) return false;
+		if (Double.doubleToLongBits(r()) != Double.doubleToLongBits(other.r())) return false;
+		if (Double.doubleToLongBits(a()) != Double.doubleToLongBits(other.a())) return false;
+		return true;
+	}
 }