diff --git a/powerbell/build.properties b/powerbell/build.properties
index 2830a65..3e2524e 100644
--- a/powerbell/build.properties
+++ b/powerbell/build.properties
@@ -1,8 +1,8 @@
 #Created by .winboll/winboll_app_build.gradle
-#Sat Dec 13 20:44:35 GMT 2025
+#Sat Dec 13 20:50:08 GMT 2025
 stageCount=2
 libraryProject=
 baseVersion=15.14
 publishVersion=15.14.1
-buildCount=47
+buildCount=50
 baseBetaVersion=15.14.2
diff --git a/powerbell/src/main/java/cc/winboll/studio/powerbell/activities/BackgroundSettingsActivity.java b/powerbell/src/main/java/cc/winboll/studio/powerbell/activities/BackgroundSettingsActivity.java
index 1331ec8..1e59582 100644
--- a/powerbell/src/main/java/cc/winboll/studio/powerbell/activities/BackgroundSettingsActivity.java
+++ b/powerbell/src/main/java/cc/winboll/studio/powerbell/activities/BackgroundSettingsActivity.java
@@ -325,6 +325,7 @@ public class BackgroundSettingsActivity extends WinBoLLActivity {
             bean.setPixelColor(0);
             mBgSourceUtils.saveSettings();
             doubleRefreshPreview();
+			isPreviewBackgroundChanged = true;
             ToastUtils.show("像素颜色已清空");
             LogUtils.d(TAG, "【像素清空】旧颜色：" + oldColor);
         }
@@ -861,6 +862,7 @@ public class BackgroundSettingsActivity extends WinBoLLActivity {
 
 	private void handlePixelPickerResult(int requestCode, int resultCode, Intent data) {
 		doubleRefreshPreview();
+		isPreviewBackgroundChanged = true;
 	}
 }