diff --git a/contacts/build.properties b/contacts/build.properties
index d88cd71..3dc9908 100644
--- a/contacts/build.properties
+++ b/contacts/build.properties
@@ -1,8 +1,8 @@
 #Created by .winboll/winboll_app_build.gradle
-#Mon Jul 20 14:47:50 CST 2026
+#Tue Jul 21 11:13:12 CST 2026
 stageCount=12
 libraryProject=
-baseVersion=15.20
+baseVersion=15.21
 publishVersion=15.20.11
-buildCount=17
+buildCount=22
 baseBetaVersion=15.20.12
diff --git a/contacts/src/main/java/cc/winboll/studio/contacts/views/DunTemperatureView.java b/contacts/src/main/java/cc/winboll/studio/contacts/views/DunTemperatureView.java
index 7cce563..c4923c9 100644
--- a/contacts/src/main/java/cc/winboll/studio/contacts/views/DunTemperatureView.java
+++ b/contacts/src/main/java/cc/winboll/studio/contacts/views/DunTemperatureView.java
@@ -36,6 +36,14 @@ public class DunTemperatureView extends View {
     private static final int FILL_PADDING_VERTICAL = 2;
     // 竖排文本字间距
     private static final float TEXT_CHAR_SPACING = 8f;
+    // 渐变颜色常量（低→中→高 对应绿→黄→红）
+    private static final int COLOR_GRADIENT_LOW = Color.GREEN;
+    private static final int COLOR_GRADIENT_MID = Color.YELLOW;
+    private static final int COLOR_GRADIENT_HIGH = Color.RED;
+    // 边框颜色
+    private static final int COLOR_BORDER = Color.parseColor("#FF444444");
+    // 文本颜色
+    private static final int COLOR_TEXT = Color.parseColor("#FF000000");
     // Handler消息标识
     public static final int MSG_UPDATE_DUN_VALUE = 0x01;
     // 消息参数Key
@@ -60,13 +68,13 @@ public class DunTemperatureView extends View {
     private int mCurrentValue = 0; // 当前盾值
     private RectF mThermometerRect; // 温度条矩形区域
     // 渐变颜色配置（低→中→高 对应绿→黄→红）
-    private int[] mGradientColors = {Color.GREEN, Color.YELLOW, Color.RED};
+    private int[] mGradientColors = {COLOR_GRADIENT_LOW, COLOR_GRADIENT_MID, COLOR_GRADIENT_HIGH};
     private float[] mGradientPositions = {0.0f, 0.5f, 1.0f};
     // 布局配置：true=文本在温度条右侧（默认），false=文本在温度条左侧
     private boolean isTextOnRight = true;
     // 其他颜色配置
-    private int mBorderColor = Color.parseColor("#FF444444");
-    private int mTextColor = Color.parseColor("#FF000000");
+    private int mBorderColor = COLOR_BORDER;
+    private int mTextColor = COLOR_TEXT;
 
     // ====================== 静态代码块 ======================
     static {