diff --git a/core/src/zero1hd/rhythmbullet/entity/enemies/VoidCircle.java b/core/src/zero1hd/rhythmbullet/entity/enemies/VoidCircle.java
index e4a785c..afd9655 100755
--- a/core/src/zero1hd/rhythmbullet/entity/enemies/VoidCircle.java
+++ b/core/src/zero1hd/rhythmbullet/entity/enemies/VoidCircle.java
@@ -4,6 +4,7 @@ import java.util.HashMap;
 
 import com.badlogic.gdx.audio.Sound;
 import com.badlogic.gdx.graphics.Texture;
+import com.badlogic.gdx.graphics.g2d.Batch;
 import com.badlogic.gdx.graphics.g2d.Sprite;
 
 import zero1hd.rhythmbullet.entity.Entity;
@@ -17,7 +18,6 @@ public class VoidCircle extends Entity {
 	private float maxTime;
 	private Sound sound;
 	
-	
 	@Override
 	public void preInit() {
 		sprite = new Sprite(assets.get("void_circle.png", Texture.class));
@@ -59,7 +59,7 @@ public class VoidCircle extends Entity {
 			sprite.setColor(0f,0f,0f,1f);
 		} else {
 			sprite.setSize(2*endRadius, 2*endRadius);
-			sprite.setColor(1f,1f,1f,0.1f*(timer/maxTime));
+			sprite.setColor(1f,0.52f,0.32f,0.1f*(timer/maxTime));
 		}
 		
 		if (timer > 0) {
@@ -80,6 +80,10 @@ public class VoidCircle extends Entity {
 		super.act(delta);
 	}
 	
+	@Override
+	public void draw(Batch batch, float parentAlpha) {
+		super.draw(batch, parentAlpha);
+	}
 	
 	@Override
 	public void reset() {
@@ -90,12 +94,16 @@ public class VoidCircle extends Entity {
 		endRadius = 0;
 		begin = false;
 		setSize(0, 0);
+		
 		super.reset();
 	}
 	
 	public void growCurrentRadius(float radius) {
 		currentRadius += radius;
 		float length = (float) Math.sqrt(2*(currentRadius*currentRadius));
+		if (length < 0) {
+			length = 0;
+		}
 		hitbox.setSize(length, length);
 	}
 
diff --git a/core/src/zero1hd/rhythmbullet/ui/builders/GraphicsTable.java b/core/src/zero1hd/rhythmbullet/ui/builders/GraphicsTable.java
index 2fc0d2b..b99c7a4 100755
--- a/core/src/zero1hd/rhythmbullet/ui/builders/GraphicsTable.java
+++ b/core/src/zero1hd/rhythmbullet/ui/builders/GraphicsTable.java
@@ -14,7 +14,7 @@ import com.badlogic.gdx.utils.Align;
 public class GraphicsTable extends Table {
 	private Label resolutions, shaders;
 	
-	private CheckBox glowShader, bgShader, invertShader;
+	private CheckBox glowShader, bgShader, invertShader, fancySpriteShader;
 	
 	private SetResolutionButton 
 	_3840x2160,
@@ -50,6 +50,11 @@ public class GraphicsTable extends Table {
 		add(bgShader).minHeight(shaders.getHeight());
 		row();
 		
+		fancySpriteShader = new CheckBox(" Fancy Sprites", skin, "expandable");
+		fancySpriteShader.setChecked(pref.getBoolean("fancy", true));
+		add(fancySpriteShader).minHeight(shaders.getHeight());
+		row();
+		
 		resolutions = new Label("Optimized Resolutions", skin);
 		add(resolutions).left();
 		row();
@@ -109,5 +114,6 @@ public class GraphicsTable extends Table {
 		prefs.putBoolean("bg shader", bgShader.isChecked());
 		prefs.putBoolean("glow shader", glowShader.isChecked());
 		prefs.putBoolean("invert shader", invertShader.isChecked());
+		prefs.putBoolean("fancy", fancySpriteShader.isChecked());
 	}
 }
diff --git a/core/src/zero1hd/rhythmbullet/ui/pages/AnalyzePage.java b/core/src/zero1hd/rhythmbullet/ui/pages/AnalyzePage.java
index 7364b0e..57ee3ec 100755
--- a/core/src/zero1hd/rhythmbullet/ui/pages/AnalyzePage.java
+++ b/core/src/zero1hd/rhythmbullet/ui/pages/AnalyzePage.java
@@ -57,7 +57,7 @@ public class AnalyzePage extends Page implements MiniListener {
 	private long startTime, endTime;
 	
 	private Thread mapGenThread;
-	private volatile GameScreen gameScreen;
+	private GameScreen gameScreen;
 
 	
 	private RhythmBullet core;
@@ -222,7 +222,6 @@ public class AnalyzePage extends Page implements MiniListener {
 		info[0].addAction(Actions.color(Color.BLACK, 2.5f));
 	}
 	
-	
 	@Override
 	public void act(float delta) {
 		super.act(delta);
@@ -251,6 +250,7 @@ public class AnalyzePage extends Page implements MiniListener {
 				info[2].addAction(Actions.color(Color.BLACK, 0.75f));
 				confirmDiffButton.setDisabled(false);
 			}
+			
 			info[0].setText("Initial analysis: " + audioAnalyzer.getProgress() + "%");
 			break;
 		case SPECTRAL_FLUX_DONE:
diff --git a/core/src/zero1hd/rhythmbullet/util/MiniSender.java b/core/src/zero1hd/rhythmbullet/util/MiniSender.java
index b060edb..c234785 100755
--- a/core/src/zero1hd/rhythmbullet/util/MiniSender.java
+++ b/core/src/zero1hd/rhythmbullet/util/MiniSender.java
@@ -3,23 +3,23 @@ package zero1hd.rhythmbullet.util;
 import com.badlogic.gdx.utils.Array;
 
 public class MiniSender {
-	private Array<MiniListener> listeners;
+	private volatile Array<MiniListener> listeners;
 
 	public MiniSender() {
 		listeners = new Array<MiniListener>();
 	}
 	
-	public void send(MiniEvents ID) {
+	public synchronized void send(MiniEvents ID) {
 		for (MiniListener listener : listeners) {
 			listener.handle(ID);
 		}
 	}
 	
-	public void addListener(MiniListener handler) {
+	public synchronized void addListener(MiniListener handler) {
 		listeners.add(handler);
 	}
 	
-	public void removeListener(MiniListener listener) {
+	public synchronized void removeListener(MiniListener listener) {
 		listeners.removeValue(listener, true);
 	}
 }