How to set the background color of Tab.Navigator?

Question

As you can see below, I've tried many ways of setting the background color to green, all to no avail. The background remains blue like the image.

The inactiveColor and activeColor are working (white and red respectively).

<NavigationContainer>

  <Tab.Navigator
    initialRouteName="HomeScreen"
    activeColor="red"
    inactiveColor="white"
    activeBackgroundColor="green"
    inactiveBackgroundColor="green"
    style={{ backgroundColor: 'green' }}
    tabBarOptions={{
      style:{
        backgroundColor: 'green'
      }
    }}
  >

    <Tab.Screen
      name="HomeScreen"
      options={{
        tabBarLabel: 'Home',
        tabBarIcon: ({ color }) => (
          <MaterialCommunityIcons name="home" color={color} size={26} />
        ),
      }}
    >
    {props => <HomeScreen {...props} state={this.state} />}
    </Tab.Screen>

    <Tab.Screen
      name="Files"
      component={FilesScreen}
      options={{
        tabBarLabel: 'Files',
        tabBarIcon: ({ color }) => (
          <MaterialCommunityIcons name="file" color={color} size={26} />
        ),
      }}
    />

  </Tab.Navigator>

</NavigationContainer>

package.json

"dependencies": {
  "@react-native-community/masked-view": "^0.1.7",
  "@react-navigation/material-bottom-tabs": "^5.1.7",
  "@react-navigation/native": "^5.1.4",
}

Answer 1

In React Navigation 6.x, you use tabBarStyle

<Tab.Navigator
  screenOptions={({ route }) => ({
    headerShown: false,
    tabBarStyle: {
      height: 90,
      paddingHorizontal: 5,
      paddingTop: 0,
      backgroundColor: 'rgba(34,36,40,1)',
      position: 'absolute',
      borderTopWidth: 0,
  },
})}
  >
  <Tab.Screen name="Home" component={Home} />
  <Tab.Screen name="List" component={RegistrationList} />
  <Tab.Screen name="News" component={News} />
  <Tab.Screen name="Profile" component={Profile} />
</Tab.Navigator>

Answer 2

in the react-navigation V5 your can to do this:

 <Tab.Navigator
    initialRouteName={'Critic'}
    tabBarOptions={{
       activeTintColor: '#fff',
       inactiveTintColor: 'lightgray',
       activeBackgroundColor: '#c4461c',
       inactiveBackgroundColor: '#b55031',
           style: {
                 backgroundColor: '#CE4418',
                 paddingBottom: 3
           }
    }}
>
    <Tab.Screen name="Critic" component={Critic} options={CriticOptions} />
    <Tab.Screen name="Urgent" component={Urgent} options={UrgentOptions} />
    <Tab.Screen name="Moderate" component={Moderate} options={ModerateOptions} />
    <Tab.Screen name="All" component={All} options={AllOptions} />
 </Tab.Navigator>
);