diff --git a/ANX.Framework.TestCenter/Strukturen/ColorTest.cs b/ANX.Framework.TestCenter/Strukturen/ColorTest.cs
index 67d47a9d..0f9f0939 100644
--- a/ANX.Framework.TestCenter/Strukturen/ColorTest.cs
+++ b/ANX.Framework.TestCenter/Strukturen/ColorTest.cs
@@ -681,5 +681,19 @@ namespace ANX.Framework.TestCenter.Strukturen
         }
 
         #endregion
+
+        #region BugFixes
+        [Test]
+        public void BugFixIssue481()
+        {
+            Color textColor = new Color(new Vector4(1));
+
+            Assert.AreEqual((byte)255, textColor.R);
+            Assert.AreEqual((byte)255, textColor.G);
+            Assert.AreEqual((byte)255, textColor.B);
+            Assert.AreEqual((byte)255, textColor.A);
+        }
+
+        #endregion
     }
 }
diff --git a/ANX.Framework/Color.cs b/ANX.Framework/Color.cs
index b388a676..b0930274 100644
--- a/ANX.Framework/Color.cs
+++ b/ANX.Framework/Color.cs
@@ -111,9 +111,8 @@ namespace ANX.Framework
         }
 
         public Color(Vector4 vector)
+            : this(vector.X, vector.Y, vector.Z, vector.W)
         {
-            this.packedValue = 0;
-            ((IPackedVector)this).PackFromVector4(vector);
         }
 
         private Color(uint packedValue)
diff --git a/ANX.Framework/Graphics/DynamicIndexBuffer.cs b/ANX.Framework/Graphics/DynamicIndexBuffer.cs
index ce7bcdfe..2b0b2e0e 100644
--- a/ANX.Framework/Graphics/DynamicIndexBuffer.cs
+++ b/ANX.Framework/Graphics/DynamicIndexBuffer.cs
@@ -56,39 +56,60 @@ namespace ANX.Framework.Graphics
     {
         public virtual event EventHandler<EventArgs> ContentLost;
 
+        #region Private Members
+        private bool isContentLost;
+
+        #endregion
+
         public DynamicIndexBuffer(GraphicsDevice graphicsDevice, IndexElementSize indexElementSize, int indexCount, BufferUsage usage)
             : base(graphicsDevice, indexElementSize, indexCount, usage)
         {
-            throw new NotImplementedException();
+            graphicsDevice.DeviceReset += new EventHandler<EventArgs>(graphicsDevice_DeviceReset);
         }
 
         public DynamicIndexBuffer(GraphicsDevice graphicsDevice, Type indexType, int indexCount, BufferUsage usage)
             : base(graphicsDevice, indexType, indexCount, usage)
         {
-            throw new NotImplementedException();
+            graphicsDevice.DeviceReset += new EventHandler<EventArgs>(graphicsDevice_DeviceReset);
+        }
+
+        ~DynamicIndexBuffer()
+        {
+            base.GraphicsDevice.DeviceReset -= graphicsDevice_DeviceReset;
+        }
+
+        private void graphicsDevice_DeviceReset(object sender, EventArgs e)
+        {
+            SetContentLost(true);
         }
 
         public void SetData<T>(int offsetInBytes, T[] data, int startIndex, int elementCount, SetDataOptions options) where T : struct
         {
-            throw new NotImplementedException();
+            //TODO: SetDataOptions not used
+            base.SetData<T>(offsetInBytes, data, startIndex, elementCount);
         }
 
         public void SetData<T>(T[] data, int startIndex, int elementCount, SetDataOptions options) where T : struct
         {
-            throw new NotImplementedException();
+            //TODO: SetDataOptions not used
+            base.SetData<T>(data, startIndex, elementCount);
         }
 
         public bool IsContentLost
         {
             get
             {
-                throw new NotImplementedException();
+                return this.isContentLost;
             }
         }
 
         public void SetContentLost(bool isContentLost)
         {
-            throw new NotImplementedException();
+            this.isContentLost = isContentLost;
+            if (isContentLost)
+            {
+                raise_ContentLost(this, EventArgs.Empty);
+            }
         }
 
         protected void raise_ContentLost(object sender, EventArgs args)
diff --git a/ANX.Framework/Graphics/DynamicVertexBuffer.cs b/ANX.Framework/Graphics/DynamicVertexBuffer.cs
index 31f30b77..bcf0541c 100644
--- a/ANX.Framework/Graphics/DynamicVertexBuffer.cs
+++ b/ANX.Framework/Graphics/DynamicVertexBuffer.cs
@@ -56,39 +56,60 @@ namespace ANX.Framework.Graphics
     {
         public virtual event EventHandler<EventArgs> ContentLost;
 
+        #region Private Members
+        private bool isContentLost;
+
+        #endregion
+
         public DynamicVertexBuffer(GraphicsDevice graphicsDevice, Type vertexType, int vertexCount, BufferUsage usage)
             : base(graphicsDevice, vertexType, vertexCount, usage)
         {
-            throw new NotImplementedException();
+            graphicsDevice.DeviceReset += new EventHandler<EventArgs>(graphicsDevice_DeviceReset);
         }
 
         public DynamicVertexBuffer(GraphicsDevice graphicsDevice, VertexDeclaration vertexDeclaration, int vertexCount, BufferUsage usage)
             : base(graphicsDevice, vertexDeclaration, vertexCount, usage)
         {
-            throw new NotImplementedException();
+            graphicsDevice.DeviceReset += new EventHandler<EventArgs>(graphicsDevice_DeviceReset);
+        }
+
+        ~DynamicVertexBuffer()
+        {
+            base.GraphicsDevice.DeviceReset -= graphicsDevice_DeviceReset;
+        }
+
+        private void graphicsDevice_DeviceReset(object sender, EventArgs e)
+        {
+            SetContentLost(true);
         }
 
         public void SetData<T>(int offsetInBytes, T[] data, int startIndex, int elementCount, int vertexStride, SetDataOptions options) where T : struct
         {
-            throw new NotImplementedException();
+            //TODO: SetDataOptions not used
+            base.SetData<T>(offsetInBytes, data, startIndex, elementCount, vertexStride);
         }
 
         public void SetData<T>(T[] data, int startIndex, int elementCount, SetDataOptions options) where T : struct
         {
-            throw new NotImplementedException();
+            //TODO: SetDataOptions not used
+            base.SetData<T>(data, startIndex, elementCount);
         }
 
         public bool IsContentLost
         {
             get
             {
-                throw new NotImplementedException();
+                return this.isContentLost;
             }
         }
 
         public void SetContentLost(bool isContentLost)
         {
-            throw new NotImplementedException();
+            this.isContentLost = isContentLost;
+            if (isContentLost)
+            {
+                raise_ContentLost(this, EventArgs.Empty);
+            }
         }
 
         protected void raise_ContentLost(object sender, EventArgs args)
diff --git a/ANX.Framework/Graphics/SpriteBatch.cs b/ANX.Framework/Graphics/SpriteBatch.cs
index 3baa9cad..d174b2cb 100644
--- a/ANX.Framework/Graphics/SpriteBatch.cs
+++ b/ANX.Framework/Graphics/SpriteBatch.cs
@@ -66,9 +66,9 @@ namespace ANX.Framework.Graphics
         private SpriteSortMode currentSortMode;
         private SpriteInfo[] spriteInfos;
         private int currentBatchPosition;
-        private IndexBuffer indexBuffer;
+        private DynamicIndexBuffer indexBuffer;
         private VertexPositionColorTexture[] vertices;
-        private VertexBuffer vertexBuffer;
+        private DynamicVertexBuffer vertexBuffer;
 
         private BlendState blendState;
         private SamplerState samplerState;
@@ -476,9 +476,27 @@ namespace ANX.Framework.Graphics
 
             if (this.indexBuffer == null)
             {
-                this.indexBuffer = new IndexBuffer(this.GraphicsDevice, IndexElementSize.SixteenBits, indexCount, BufferUsage.WriteOnly);
+                this.indexBuffer = new DynamicIndexBuffer(this.GraphicsDevice, IndexElementSize.SixteenBits, indexCount, BufferUsage.WriteOnly);
+                this.indexBuffer.ContentLost += new EventHandler<EventArgs>(indexBuffer_ContentLost);
             }
 
+            SetIndexData(indexCount);
+        }
+
+        private void indexBuffer_ContentLost(object sender, EventArgs e)
+        {
+            if (this.indexBuffer != null)
+            {
+                this.indexBuffer.ContentLost -= indexBuffer_ContentLost;
+                this.indexBuffer.Dispose();
+                this.indexBuffer = null;
+            }
+
+            InitializeIndexBuffer(InitialBatchSize);
+        }
+
+        private void SetIndexData(int indexCount)
+        {
             short[] indices = new short[indexCount];
 
             int baseIndex;
@@ -503,10 +521,25 @@ namespace ANX.Framework.Graphics
         {
             if (this.vertexBuffer == null)
             {
-                this.vertexBuffer = new VertexBuffer(this.GraphicsDevice, typeof(VertexPositionColorTexture), InitialBatchSize * 4, BufferUsage.WriteOnly);
+                this.vertexBuffer = new DynamicVertexBuffer(this.GraphicsDevice, typeof(VertexPositionColorTexture), InitialBatchSize * 4, BufferUsage.WriteOnly);
+                this.vertexBuffer.ContentLost += new EventHandler<EventArgs>(vertexBuffer_ContentLost);
             }
         }
 
+        private void vertexBuffer_ContentLost(object sender, EventArgs e)
+        {
+            this.currentBatchPosition = 0;
+
+            if (this.vertexBuffer != null)
+            {
+                this.vertexBuffer.ContentLost -= vertexBuffer_ContentLost;
+                this.vertexBuffer.Dispose();
+                this.vertexBuffer = null;
+            }
+
+            InitializeVertexBuffer();
+        }
+
         private void SetRenderStates()
         {
             GraphicsDevice.BlendState = this.blendState != null ? this.blendState : BlendState.AlphaBlend;