Android 2.3 messing up buttons

Android 2.3 messing up buttons

I have a relativelayout defined as follows with an edit text and a send
button:
<RelativeLayout
android:id="@+id/bottom"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="@drawable/message"
android:visibility="invisible">
<Button
android:id="@+id/send"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:text="Send"
android:padding="-5dp"
android:paddingBottom="-10dp"
android:background="@color/red"
android:visibility="invisible"/>
<EditText
android:id="@+id/editText1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/sendBtn"
android:layout_alignBottom="@+id/sendBtn"
android:layout_alignParentLeft="true"
android:layout_toLeftOf="@+id/send"
android:background="@drawable/reply"
android:cursorVisible="true"
android:ems="10"
android:focusable="true"
android:imeOptions="flagNoExtractUi"
android:inputType="textMultiLine"
android:maxLines="1"
android:layout_margin="5sp"
android:layout_weight="1"
android:padding="5sp"
android:textColor="#000000"
android:visibility="invisible"/>
</RelativeLayout>
In Android 2.3, this is how it looks like when the background color for
the button is set: http://i.imgur.com/KiSzU2T.png
In Android 2.3, this is how it looks when the background color is NOT set:
http://i.imgur.com/k5jLxUA.png
As you can see the EditText is cramped up when the color is set. How do I
just the color without making the edit text disappear?