diff --git a/gallery/src/main/java/cc/winboll/studio/gallery/CropActivity.java b/gallery/src/main/java/cc/winboll/studio/gallery/CropActivity.java
index e60ccca..68e9b03 100644
--- a/gallery/src/main/java/cc/winboll/studio/gallery/CropActivity.java
+++ b/gallery/src/main/java/cc/winboll/studio/gallery/CropActivity.java
@@ -104,6 +104,12 @@ public class CropActivity extends AppCompatActivity {
             @Override
             public void onBackgroundColorChanged(int color) {
                 colorView.setBackgroundColor(color);
+            }
+        });
+        
+        cropCanvasView.setOnColorPickedListener(new CropCanvasView.OnColorPickedListener() {
+            @Override
+            public void onColorPicked(int color) {
                 cropCanvasView.setColorPickMode(false);
                 btnColorPick.setAlpha(1.0f);
             }
diff --git a/gallery/src/main/java/cc/winboll/studio/gallery/CropCanvasView.java b/gallery/src/main/java/cc/winboll/studio/gallery/CropCanvasView.java
index fdcc8c1..9053108 100644
--- a/gallery/src/main/java/cc/winboll/studio/gallery/CropCanvasView.java
+++ b/gallery/src/main/java/cc/winboll/studio/gallery/CropCanvasView.java
@@ -16,11 +16,20 @@ public class CropCanvasView extends View {
         void onBackgroundColorChanged(int color);
     }
     
+    public interface OnColorPickedListener {
+        void onColorPicked(int color);
+    }
+    
     private OnBackgroundColorChangedListener backgroundColorChangedListener;
+    private OnColorPickedListener colorPickedListener;
     
     public void setOnBackgroundColorChangedListener(OnBackgroundColorChangedListener listener) {
         this.backgroundColorChangedListener = listener;
     }
+    
+    public void setOnColorPickedListener(OnColorPickedListener listener) {
+        this.colorPickedListener = listener;
+    }
     private Paint imagePaint;
     private Paint borderPaint;
     private Paint cornerPaint;
@@ -55,6 +64,7 @@ public class CropCanvasView extends View {
     private float initialSpan;
     private int backgroundColor = Color.BLUE;
     private boolean colorPickMode = false;
+    private int previewColor = 0;
     private float pickX, pickY;
     
     private float displayScale = 1.0f;
@@ -465,12 +475,40 @@ public class CropCanvasView extends View {
                 if (originalBitmap != null && !originalBitmap.isRecycled()) {
                     float imgX = screenToImageX(x);
                     float imgY = screenToImageY(y);
-                    int bmpX = (int) ((imgX - imageBounds.left) / displayScale * displayBitmapScale);
-                    int bmpY = (int) ((imgY - imageBounds.top) / displayScale * displayBitmapScale);
+                    int bmpX = (int) ((imgX - imageBounds.left) * displayBitmapScale);
+                    int bmpY = (int) ((imgY - imageBounds.top) * displayBitmapScale);
                     bmpX = Math.max(0, Math.min(bmpX, originalBitmap.getWidth() - 1));
                     bmpY = Math.max(0, Math.min(bmpY, originalBitmap.getHeight() - 1));
-                    int color = originalBitmap.getPixel(bmpX, bmpY);
-                    setBackgroundColor(color);
+                    previewColor = originalBitmap.getPixel(bmpX, bmpY);
+                    if (backgroundColorChangedListener != null) {
+                        backgroundColorChangedListener.onBackgroundColorChanged(previewColor);
+                    }
+                }
+                return true;
+            }
+            if (event.getAction() == MotionEvent.ACTION_MOVE) {
+                if (originalBitmap != null && !originalBitmap.isRecycled()) {
+                    float imgX = screenToImageX(x);
+                    float imgY = screenToImageY(y);
+                    int bmpX = (int) ((imgX - imageBounds.left) * displayBitmapScale);
+                    int bmpY = (int) ((imgY - imageBounds.top) * displayBitmapScale);
+                    bmpX = Math.max(0, Math.min(bmpX, originalBitmap.getWidth() - 1));
+                    bmpY = Math.max(0, Math.min(bmpY, originalBitmap.getHeight() - 1));
+                    previewColor = originalBitmap.getPixel(bmpX, bmpY);
+                    if (backgroundColorChangedListener != null) {
+                        backgroundColorChangedListener.onBackgroundColorChanged(previewColor);
+                    }
+                }
+                return true;
+            }
+            if (event.getAction() == MotionEvent.ACTION_UP) {
+                if (previewColor != 0) {
+                    backgroundColor = previewColor;
+                    if (colorPickedListener != null) {
+                        colorPickedListener.onColorPicked(backgroundColor);
+                    }
+                    previewColor = 0;
+                    invalidate();
                 }
                 return true;
             }