All IconicsImageView trigger the background style At the same time
I put three IconicsImageView in one RelativeLayout,each IconicsImageView has background:btn_feed_action.Click one ImageView,all three ImageView trigger the background style.  
here is code:
layout.xml:  

``` xml
            <com.mikepenz.iconics.view.IconicsImageView
                android:id="@+id/cv_actions_favorite"
                android:padding="8dp"
                android:layout_width="36dp"
                android:layout_height="36dp"
                android:background="@drawable/btn_feed_action"
                app:iiv_color="@android:color/darker_gray"
                app:iiv_icon="gmd-favorite-border">
            </com.mikepenz.iconics.view.IconicsImageView>

            <com.mikepenz.iconics.view.IconicsImageView
                android:id="@+id/cv_actions_mark"
                android:padding="8dp"
                android:layout_marginLeft="8dp"
                android:layout_toRightOf="@+id/cv_actions_favorite"
                android:layout_width="36dp"
                android:layout_height="36dp"
                android:background="@drawable/btn_feed_action"
                app:iiv_color="@android:color/darker_gray"
                app:iiv_icon="gmd-turned-in-not">
            </com.mikepenz.iconics.view.IconicsImageView>

            <com.mikepenz.iconics.view.IconicsImageView
                android:id="@+id/cv_actions_share"
                android:padding="8dp"
                android:layout_marginLeft="8dp"
                android:layout_toRightOf="@+id/cv_actions_mark"
                android:layout_width="36dp"
                android:layout_height="36dp"
                android:background="@drawable/btn_feed_action"
                app:iiv_color="@android:color/darker_gray"
                app:iiv_icon="gmd-share">
            </com.mikepenz.iconics.view.IconicsImageView>
```

btn_feed_action.xml:  

``` xml
<?xml version="1.0" encoding="utf-8"?>  
<selector  
    xmlns:android="http://schemas.android.com/apk/res/android"  
    android:enterFadeDuration="200"  
    android:exitFadeDuration="200">  
    <item android:state_pressed="false">  
        <shape android:shape="oval">  
            <solid android:color="@android:color/transparent" />  
        </shape>  
    </item>  
    <item android:state_pressed="true">  
        <shape android:shape="oval">  
            <solid android:color="#6621425d" />  
        </shape>  
    </item>  
</selector>
```
