How to change the divider color in the listview?

I have tried it out with:

 <ListView 
    android:id="@+id/ListView01" 
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:divider="@color/redBackground"
    android:dividerHeight="1dip">
 </ListView>

and color value is inside colors.xml:

<color name="redBackground">#C60202</color>

And its working fine and displaying Divider color as red with 1dip height.

Update:

Just check your listview layout, you have mentioned 1px for layout_width and layout_height and you are setting 4px for the dividerHeight.