diff --git a/BizHawk.MultiClient/GBtools/BmpView.cs b/BizHawk.MultiClient/GBtools/BmpView.cs
index 0b28c777a4..f16dfa595e 100644
--- a/BizHawk.MultiClient/GBtools/BmpView.cs
+++ b/BizHawk.MultiClient/GBtools/BmpView.cs
@@ -11,7 +11,8 @@ namespace BizHawk.MultiClient.GBtools
 {
 	public partial class BmpView : Control
 	{
-		public Bitmap bmp;
+		public Bitmap bmp { get; private set; }
+		bool scaled;
 
 		public BmpView()
 		{
@@ -22,37 +23,49 @@ namespace BizHawk.MultiClient.GBtools
 			SetStyle(ControlStyles.Opaque, true);
 			this.BackColor = Color.Transparent;
 			this.Paint += new PaintEventHandler(BmpView_Paint);
-			this.SizeChanged += new EventHandler(BmpView_SizeChanged);
+			ChangeBitmapSize(1, 1);
 		}
 
 		void BmpView_Paint(object sender, PaintEventArgs e)
 		{
-			if (bmp != null)
+			if (scaled)
 			{
 				e.Graphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.NearestNeighbor;
 				e.Graphics.PixelOffsetMode = System.Drawing.Drawing2D.PixelOffsetMode.Half;
+				e.Graphics.DrawImage(bmp, 0, 0, Width, Height);
+			}
+			else
+			{
 				e.Graphics.DrawImageUnscaled(bmp, 0, 0);
 			}
 		}
 
-		void BmpView_SizeChanged(object sender, EventArgs e)
+		public void ChangeBitmapSize(Size s)
+		{
+			ChangeBitmapSize(s.Width, s.Height);
+		}
+
+		public void ChangeBitmapSize(int w, int h)
 		{
 			if (bmp != null)
-			{
 				bmp.Dispose();
-				bmp = null;
-			}
-			if (Width == 0 || Height == 0)
-				return;
-			bmp = new Bitmap(Width, Height, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
+			bmp = new Bitmap(w, h, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
+			scaled = !(w == Width && h == Height);
 		}
 
 		public void Clear()
 		{
 			var lockdata = bmp.LockBits(new Rectangle(0, 0, bmp.Width, bmp.Height), System.Drawing.Imaging.ImageLockMode.WriteOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
-			Win32.ZeroMemory(lockdata.Scan0, (uint)(lockdata.Height * lockdata.Stride));
+			//Win32.ZeroMemory(lockdata.Scan0, (uint)(lockdata.Height * lockdata.Stride));
+			Win32.MemSet(lockdata.Scan0, 0xff, (uint)(lockdata.Height * lockdata.Stride));
 			bmp.UnlockBits(lockdata);
 			Refresh();
 		}
+
+		// kill unused props
+		[Browsable(false)]
+		public override Color BackColor { get { return base.BackColor; } set { base.BackColor = value; } }
+		[Browsable(false)]
+		public override string Text { get { return base.Text; } set { base.Text = value; } }
 	}
 }
diff --git a/BizHawk.MultiClient/GBtools/GBGPUView.Designer.cs b/BizHawk.MultiClient/GBtools/GBGPUView.Designer.cs
index b6bfa0b67e..e09965dc02 100644
--- a/BizHawk.MultiClient/GBtools/GBGPUView.Designer.cs
+++ b/BizHawk.MultiClient/GBtools/GBGPUView.Designer.cs
@@ -30,12 +30,16 @@
 		{
 			this.label1 = new System.Windows.Forms.Label();
 			this.label2 = new System.Windows.Forms.Label();
-			this.bmpViewWin = new BizHawk.MultiClient.GBtools.BmpView();
-			this.bmpViewBG = new BizHawk.MultiClient.GBtools.BmpView();
-			this.bmpViewTiles1 = new BizHawk.MultiClient.GBtools.BmpView();
-			this.bmpViewTiles2 = new BizHawk.MultiClient.GBtools.BmpView();
 			this.label3 = new System.Windows.Forms.Label();
 			this.label4 = new System.Windows.Forms.Label();
+			this.label5 = new System.Windows.Forms.Label();
+			this.label6 = new System.Windows.Forms.Label();
+			this.bmpViewSPPal = new BizHawk.MultiClient.GBtools.BmpView();
+			this.bmpViewBGPal = new BizHawk.MultiClient.GBtools.BmpView();
+			this.bmpViewTiles2 = new BizHawk.MultiClient.GBtools.BmpView();
+			this.bmpViewTiles1 = new BizHawk.MultiClient.GBtools.BmpView();
+			this.bmpViewWin = new BizHawk.MultiClient.GBtools.BmpView();
+			this.bmpViewBG = new BizHawk.MultiClient.GBtools.BmpView();
 			this.SuspendLayout();
 			// 
 			// label1
@@ -56,42 +60,6 @@
 			this.label2.TabIndex = 3;
 			this.label2.Text = "Win";
 			// 
-			// bmpViewWin
-			// 
-			this.bmpViewWin.BackColor = System.Drawing.Color.Transparent;
-			this.bmpViewWin.Location = new System.Drawing.Point(274, 25);
-			this.bmpViewWin.Name = "bmpViewWin";
-			this.bmpViewWin.Size = new System.Drawing.Size(256, 256);
-			this.bmpViewWin.TabIndex = 5;
-			this.bmpViewWin.Text = "bmpView2";
-			// 
-			// bmpViewBG
-			// 
-			this.bmpViewBG.BackColor = System.Drawing.Color.Transparent;
-			this.bmpViewBG.Location = new System.Drawing.Point(12, 25);
-			this.bmpViewBG.Name = "bmpViewBG";
-			this.bmpViewBG.Size = new System.Drawing.Size(256, 256);
-			this.bmpViewBG.TabIndex = 4;
-			this.bmpViewBG.Text = "bmpView1";
-			// 
-			// bmpViewTiles1
-			// 
-			this.bmpViewTiles1.BackColor = System.Drawing.Color.Transparent;
-			this.bmpViewTiles1.Location = new System.Drawing.Point(536, 25);
-			this.bmpViewTiles1.Name = "bmpViewTiles1";
-			this.bmpViewTiles1.Size = new System.Drawing.Size(128, 192);
-			this.bmpViewTiles1.TabIndex = 6;
-			this.bmpViewTiles1.Text = "bmpView1";
-			// 
-			// bmpViewTiles2
-			// 
-			this.bmpViewTiles2.BackColor = System.Drawing.Color.Transparent;
-			this.bmpViewTiles2.Location = new System.Drawing.Point(670, 25);
-			this.bmpViewTiles2.Name = "bmpViewTiles2";
-			this.bmpViewTiles2.Size = new System.Drawing.Size(128, 192);
-			this.bmpViewTiles2.TabIndex = 7;
-			this.bmpViewTiles2.Text = "bmpView2";
-			// 
 			// label3
 			// 
 			this.label3.AutoSize = true;
@@ -110,11 +78,87 @@
 			this.label4.TabIndex = 9;
 			this.label4.Text = "Tiles 2 (CGB)";
 			// 
+			// label5
+			// 
+			this.label5.AutoSize = true;
+			this.label5.Location = new System.Drawing.Point(533, 220);
+			this.label5.Name = "label5";
+			this.label5.Size = new System.Drawing.Size(63, 13);
+			this.label5.TabIndex = 12;
+			this.label5.Text = "BG Palettes";
+			// 
+			// label6
+			// 
+			this.label6.AutoSize = true;
+			this.label6.Location = new System.Drawing.Point(667, 220);
+			this.label6.Name = "label6";
+			this.label6.Size = new System.Drawing.Size(72, 13);
+			this.label6.TabIndex = 13;
+			this.label6.Text = "OAM Palettes";
+			// 
+			// bmpViewSPPal
+			// 
+			this.bmpViewSPPal.BackColor = System.Drawing.Color.Transparent;
+			this.bmpViewSPPal.Location = new System.Drawing.Point(670, 236);
+			this.bmpViewSPPal.Name = "bmpViewSPPal";
+			this.bmpViewSPPal.Size = new System.Drawing.Size(128, 64);
+			this.bmpViewSPPal.TabIndex = 11;
+			this.bmpViewSPPal.Text = "bmpView2";
+			// 
+			// bmpViewBGPal
+			// 
+			this.bmpViewBGPal.BackColor = System.Drawing.Color.Transparent;
+			this.bmpViewBGPal.Location = new System.Drawing.Point(536, 236);
+			this.bmpViewBGPal.Name = "bmpViewBGPal";
+			this.bmpViewBGPal.Size = new System.Drawing.Size(128, 64);
+			this.bmpViewBGPal.TabIndex = 10;
+			this.bmpViewBGPal.Text = "bmpView1";
+			// 
+			// bmpViewTiles2
+			// 
+			this.bmpViewTiles2.BackColor = System.Drawing.Color.Transparent;
+			this.bmpViewTiles2.Location = new System.Drawing.Point(670, 25);
+			this.bmpViewTiles2.Name = "bmpViewTiles2";
+			this.bmpViewTiles2.Size = new System.Drawing.Size(128, 192);
+			this.bmpViewTiles2.TabIndex = 7;
+			this.bmpViewTiles2.Text = "bmpView2";
+			// 
+			// bmpViewTiles1
+			// 
+			this.bmpViewTiles1.BackColor = System.Drawing.Color.Transparent;
+			this.bmpViewTiles1.Location = new System.Drawing.Point(536, 25);
+			this.bmpViewTiles1.Name = "bmpViewTiles1";
+			this.bmpViewTiles1.Size = new System.Drawing.Size(128, 192);
+			this.bmpViewTiles1.TabIndex = 6;
+			this.bmpViewTiles1.Text = "bmpView1";
+			// 
+			// bmpViewWin
+			// 
+			this.bmpViewWin.BackColor = System.Drawing.Color.Transparent;
+			this.bmpViewWin.Location = new System.Drawing.Point(274, 25);
+			this.bmpViewWin.Name = "bmpViewWin";
+			this.bmpViewWin.Size = new System.Drawing.Size(256, 256);
+			this.bmpViewWin.TabIndex = 5;
+			this.bmpViewWin.Text = "bmpView2";
+			// 
+			// bmpViewBG
+			// 
+			this.bmpViewBG.BackColor = System.Drawing.Color.Transparent;
+			this.bmpViewBG.Location = new System.Drawing.Point(12, 25);
+			this.bmpViewBG.Name = "bmpViewBG";
+			this.bmpViewBG.Size = new System.Drawing.Size(256, 256);
+			this.bmpViewBG.TabIndex = 4;
+			this.bmpViewBG.Text = "bmpView1";
+			// 
 			// GBGPUView
 			// 
 			this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
 			this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
 			this.ClientSize = new System.Drawing.Size(951, 414);
+			this.Controls.Add(this.label6);
+			this.Controls.Add(this.label5);
+			this.Controls.Add(this.bmpViewSPPal);
+			this.Controls.Add(this.bmpViewBGPal);
 			this.Controls.Add(this.label4);
 			this.Controls.Add(this.label3);
 			this.Controls.Add(this.bmpViewTiles2);
@@ -142,5 +186,9 @@
 		private BmpView bmpViewTiles2;
 		private System.Windows.Forms.Label label3;
 		private System.Windows.Forms.Label label4;
+		private BmpView bmpViewBGPal;
+		private BmpView bmpViewSPPal;
+		private System.Windows.Forms.Label label5;
+		private System.Windows.Forms.Label label6;
 	}
 }
\ No newline at end of file
diff --git a/BizHawk.MultiClient/GBtools/GBGPUView.cs b/BizHawk.MultiClient/GBtools/GBGPUView.cs
index 955b3ff604..91d02f5c55 100644
--- a/BizHawk.MultiClient/GBtools/GBGPUView.cs
+++ b/BizHawk.MultiClient/GBtools/GBGPUView.cs
@@ -16,6 +16,12 @@ namespace BizHawk.MultiClient.GBtools
 		public GBGPUView()
 		{
 			InitializeComponent();
+			bmpViewBG.ChangeBitmapSize(256, 256);
+			bmpViewWin.ChangeBitmapSize(256, 256);
+			bmpViewTiles1.ChangeBitmapSize(128, 192);
+			bmpViewTiles2.ChangeBitmapSize(128, 192);
+			bmpViewBGPal.ChangeBitmapSize(8, 4);
+			bmpViewSPPal.ChangeBitmapSize(8, 4);
 		}
 
 		public void Restart()
@@ -31,6 +37,8 @@ namespace BizHawk.MultiClient.GBtools
 				bmpViewWin.Clear();
 				bmpViewTiles1.Clear();
 				bmpViewTiles2.Clear();
+				bmpViewBGPal.Clear();
+				bmpViewSPPal.Clear();
 			}
 			else
 			{
@@ -109,9 +117,6 @@ namespace BizHawk.MultiClient.GBtools
 
 		static unsafe void DrawBGCGB(Bitmap b, IntPtr _map, IntPtr _tiles, bool wrap, IntPtr _pal)
 		{
-			if (b.Width != 256 || b.Height != 256)
-				throw new Exception("GPUView screwed up.");
-
 			var lockdata = b.LockBits(new Rectangle(0, 0, 256, 256), System.Drawing.Imaging.ImageLockMode.WriteOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
 			byte* map = (byte*)_map;
 			int* dest = (int*)lockdata.Scan0;
@@ -144,9 +149,6 @@ namespace BizHawk.MultiClient.GBtools
 
 		static unsafe void DrawBGDMG(Bitmap b, IntPtr _map, IntPtr _tiles, bool wrap, IntPtr _pal)
 		{
-			if (b.Width != 256 || b.Height != 256)
-				throw new Exception("GPUView screwed up.");
-
 			var lockdata = b.LockBits(new Rectangle(0, 0, 256, 256), System.Drawing.Imaging.ImageLockMode.WriteOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
 			byte* map = (byte*)_map;
 			int* dest = (int*)lockdata.Scan0;
@@ -193,6 +195,26 @@ namespace BizHawk.MultiClient.GBtools
 			b.UnlockBits(lockdata);
 		}
 
+		static unsafe void DrawPal(Bitmap b, IntPtr _pal)
+		{
+			var lockdata = b.LockBits(new Rectangle(0, 0, 8, 4), System.Drawing.Imaging.ImageLockMode.WriteOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
+			int* dest = (int*)lockdata.Scan0;
+			int pitch = lockdata.Stride / sizeof(int);
+			int* pal = (int*)_pal;
+
+			for (int px = 0; px < 8; px++)
+			{
+				for (int py = 0; py < 4; py++)
+				{
+					*dest = *pal++;
+					dest += pitch;
+				}
+				dest -= pitch * 4;
+				dest++;
+			}
+			b.UnlockBits(lockdata);
+		}
+
 		void ScanlineCallback(IntPtr vram, bool cgb, int lcdc, IntPtr bgpal, IntPtr sppal)
 		{
 			// set alpha on all pixels
@@ -253,6 +275,11 @@ namespace BizHawk.MultiClient.GBtools
 				DrawTiles(bmpViewTiles2.bmp, vram + 0x2000, bgpal);
 				bmpViewTiles2.Refresh();
 			}
+
+			DrawPal(bmpViewBGPal.bmp, bgpal);
+			DrawPal(bmpViewSPPal.bmp, sppal);
+			bmpViewBGPal.Refresh();
+			bmpViewSPPal.Refresh();
 		}
 
 		private void GBGPUView_FormClosed(object sender, FormClosedEventArgs e)
diff --git a/BizHawk.Util/Win32.cs b/BizHawk.Util/Win32.cs
index 958b90f388..a2ef8b929b 100644
--- a/BizHawk.Util/Win32.cs
+++ b/BizHawk.Util/Win32.cs
@@ -442,6 +442,9 @@ namespace BizHawk
 
 		[DllImport("Kernel32.dll", EntryPoint = "RtlZeroMemory", SetLastError = false)]
 		public static extern void ZeroMemory(IntPtr dest, uint size);
+
+		[DllImport("msvcrt.dll", EntryPoint = "memset", CallingConvention = CallingConvention.Cdecl, SetLastError = false)]
+		public static extern IntPtr MemSet(IntPtr dest, int c, uint count);
 	}
 
 }
\ No newline at end of file