diff --git a/example/lib/sample/components/bottom_tabbar/bottom_tabbar_example.dart b/example/lib/sample/components/bottom_tabbar/bottom_tabbar_example.dart
index 80473add..df185807 100644
--- a/example/lib/sample/components/bottom_tabbar/bottom_tabbar_example.dart
+++ b/example/lib/sample/components/bottom_tabbar/bottom_tabbar_example.dart
@@ -175,6 +175,7 @@ class BottomTabbarExampleState extends State<BottomTabbarExample>
               BrnBottomTabBar(
                 fixedColor: Colors.blue,
                 currentIndex: _selectedIndexTest2,
+                type: BrnBottomTabBarDisplayType.shifting,
                 onTap: _onItemSelectedTest2,
                 items: <BrnBottomTabBarItem>[
                   BrnBottomTabBarItem(icon: Icon(icons[0]), title: Text(titles[0])),
@@ -187,6 +188,7 @@ class BottomTabbarExampleState extends State<BottomTabbarExample>
               ),
               BrnBottomTabBar(
                 fixedColor: Colors.blue,
+                type: BrnBottomTabBarDisplayType.shifting,
                 currentIndex: _selectedIndexTest3,
                 onTap: _onItemSelectedTest3,
                 items: _getTabBarItems(count: 8),
diff --git a/lib/src/components/tabbar/bottom/brn_bottom_tab_bar_main.dart b/lib/src/components/tabbar/bottom/brn_bottom_tab_bar_main.dart
index d1da1a05..810a2ce7 100644
--- a/lib/src/components/tabbar/bottom/brn_bottom_tab_bar_main.dart
+++ b/lib/src/components/tabbar/bottom/brn_bottom_tab_bar_main.dart
@@ -31,7 +31,7 @@ class BrnBottomTabBar extends StatefulWidget {
     required this.items,
     this.onTap,
     this.currentIndex = 0,
-    BrnBottomTabBarDisplayType type = BrnBottomTabBarDisplayType.fixed,
+    this.type = BrnBottomTabBarDisplayType.fixed,
     this.fixedColor,
     this.iconSize = 24.0,
     this.isAnimation = false,
@@ -43,9 +43,6 @@ class BrnBottomTabBar extends StatefulWidget {
           'Every item must have a non-null title',
         ),
         assert(0 <= currentIndex && currentIndex < items.length),
-        type = items.length <= 3
-            ? BrnBottomTabBarDisplayType.fixed
-            : BrnBottomTabBarDisplayType.shifting,
         super(key: key);
 
   /// 动画是否可见，默认：true
@@ -427,7 +424,7 @@ class _BottomNavigationTile extends StatelessWidget {
         break;
       case BrnBottomTabBarDisplayType.shifting:
         tweenStart = 16.0;
-        iconColor = Colors.blue;
+        iconColor = selected ? BrnThemeConfigurator.instance.getConfig().commonConfig.brandPrimary : null;
         break;
     }
     return Align(