Change edittext border color

I would like to know how to change the border color of the EditText view in android to something else...

This is my edittext view:

<EditText
    android:
    android:id="@+id/codeEditText"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true"
    android:layout_below="@+id/btnEqual"
    android:layout_marginTop="20dp"
    android:ems="10"
    android:gravity="top|left"
    android:inputType="textMultiLine|textNoSuggestions"
    android:scrollbars="vertical"
    android:singleLine="false" >

Thanx upfront.