Create a Shape in Drawable Resource
<shape xmlns:android="http://schemas.android.com/apk/res/android" >
<solid android:color="#C0213A" />`<!--Background Color-->`
<stroke android:width="2dip" android:color="#C0213A"/> `<!--Border-->`
</shape>
In your XML
<Button
android:id="@+id/button"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="15dp"
android:background="@drawable/your_shape"> `<!--This is your shape created--`>