diff --git a/core/src/main/java/com/threerings/jiggl/tween/Tween.java b/core/src/main/java/com/threerings/jiggl/tween/Tween.java
index 7c3f095..8254db2 100644
--- a/core/src/main/java/com/threerings/jiggl/tween/Tween.java
+++ b/core/src/main/java/com/threerings/jiggl/tween/Tween.java
@@ -5,6 +5,7 @@
 package com.threerings.jiggl.tween;
 
 import com.threerings.jiggl.util.Scalar;
+import com.threerings.jiggl.view.Viz;
 
 /**
  * Manages the animation of a particular property of a visible.
@@ -146,9 +147,8 @@ protected boolean apply (float time) {
     /** A tween that repeats its underlying tween over and over again (until removed). */
     public static class Repeat extends Tween
     {
-        /** Cancels this repeating tween. */
-        public void cancel () {
-            _cancelled = true;
+        public Repeat (Viz viz) {
+            _viz = viz;
         }
 
         @Override
@@ -167,12 +167,12 @@ protected boolean apply (float time) {
         @Override
         protected boolean apply (Tweener tweener, float time)
         {
-            // if we're canceled, stop now
-            if (_cancelled) return true;
-
             // if our current chain of tweens is still running, keep going
             if (!super.apply(tweener, time)) return false;
 
+            // if our target viz is no longer active, we're done
+            if (!_viz.isAdded()) return true;
+
             // otherwise, reset to the head of the chain and keep going
             float overrun = _current.getOverrun(time);
             _current = _next;
@@ -180,7 +180,7 @@ protected boolean apply (Tweener tweener, float time)
             return false;
         }
 
-        protected boolean _cancelled = false;
+        protected Viz _viz;
     }
 
     /**
diff --git a/core/src/main/java/com/threerings/jiggl/tween/Tweener.java b/core/src/main/java/com/threerings/jiggl/tween/Tweener.java
index 56636e7..15ba3f0 100644
--- a/core/src/main/java/com/threerings/jiggl/tween/Tweener.java
+++ b/core/src/main/java/com/threerings/jiggl/tween/Tweener.java
@@ -9,6 +9,7 @@
 
 import com.threerings.jiggl.util.Driver;
 import com.threerings.jiggl.util.Scalar;
+import com.threerings.jiggl.view.Viz;
 
 /**
  * Handles the animation of viz properties (position, rotation, etc.).
@@ -104,12 +105,13 @@ public Tween.Delay delay (float seconds)
     }
 
     /**
-     * Returns a tweener which can be used to construct a tween that will be repeated until
-     * canceled.
+     * Returns a tweener which can be used to construct a tween that will be repeated until the
+     * supplied viz has been removed from its view. The viz must be added to the view in question
+     * before the next frame tick, or the cancellation will trigger immediately.
      */
-    public Tweener repeat ()
+    public Tweener repeat (Viz viz)
     {
-        return register(new Tween.Repeat()).then();
+        return register(new Tween.Repeat(viz)).then();
     }
 
     /**
diff --git a/core/src/main/java/com/threerings/jiggl/view/View.java b/core/src/main/java/com/threerings/jiggl/view/View.java
index f0d40f2..1f1ee2c 100644
--- a/core/src/main/java/com/threerings/jiggl/view/View.java
+++ b/core/src/main/java/com/threerings/jiggl/view/View.java
@@ -8,6 +8,7 @@
 import java.util.List;
 
 import com.threerings.jiggl.rsrc.Tile;
+import com.threerings.jiggl.util.Color;
 
 /**
  * Coordinates the display and animation of a collection of {@link Viz} instances.
@@ -30,7 +31,7 @@ public <T extends Viz> T add (T viz)
     public void remove (Viz viz)
     {
         _vizs.remove(viz);
-        viz.onRemove(this);
+        viz.onRemove();
     }
 
     /**
@@ -39,7 +40,7 @@ public void remove (Viz viz)
     public void clear ()
     {
         for (Viz v : _vizs) {
-            v.onRemove(this);
+            v.onRemove();
         }
         _vizs.clear();
     }
@@ -50,9 +51,9 @@ public void clear ()
     public abstract void render ();
 
     /**
-     * Creates a visible that renders the supplied geometry.
+     * Creates a visible that renders the supplied geometry using the supplied color.
      */
-    public abstract Viz newGeomViz (Geometry geom);
+    public abstract Viz newGeomViz (Geometry geom, Color color);
 
     /**
      * Creates a visible to render the supplied tile.
@@ -65,7 +66,7 @@ public void clear ()
     protected void renderVisibles ()
     {
         for (int ii = 0, ll = _vizs.size(); ii < ll; ii++) {
-            _vizs.get(ii).render(this);
+            _vizs.get(ii).render();
         }
     }
 
diff --git a/core/src/main/java/com/threerings/jiggl/view/Viz.java b/core/src/main/java/com/threerings/jiggl/view/Viz.java
index 4de4001..146f783 100644
--- a/core/src/main/java/com/threerings/jiggl/view/Viz.java
+++ b/core/src/main/java/com/threerings/jiggl/view/Viz.java
@@ -4,7 +4,6 @@
 
 package com.threerings.jiggl.view;
 
-import com.threerings.jiggl.util.Color;
 import com.threerings.jiggl.util.Scalar;
 
 /**
@@ -30,9 +29,6 @@ public abstract class Viz
     /** The rotation of this visible, in radians. */
     public final Scalar rotation = new Scalar(0);
 
-    /** The color of this visible, or null. */
-    public Color color;
-
     /**
      * Returns the width of this visible, including local scaling transformations (but not
      * rotation). Transformations applied by a parent of this visible are also not included.
@@ -45,6 +41,11 @@ public abstract class Viz
      */
     public abstract float getHeight ();
 
+    /**
+     * Returns true if this viz is added to a view, false otherwise.
+     */
+    public abstract boolean isAdded ();
+
     /**
      * Called when this viz is added to a view. The viz should prepare any buffers or shader
      * programs it will need to render itself. Any exception thrown by this method will result in
@@ -57,10 +58,10 @@ public abstract class Viz
      * Called when this viz is removed from a view. The viz should destroy any buffers or shader
      * programs it created in {@link #onAdd}.
      */
-    protected abstract void onRemove (View view);
+    protected abstract void onRemove ();
 
     /**
      * Instructs this viz to issue the rendering calls needed to visualize itself.
      */
-    protected abstract void render (View view);
+    protected abstract void render ();
 }