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![angel juarez](https://secure.gravatar.com/avatar/d38f2ab6bb31e2737c6eec5f8c83e93f?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
angel juarez
15,886 PointsI have problems adding a background color for a button.
in the code challenges, I get an error when trying to add a background color to a button
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<Button
android:id="@+id/thrustButton"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:text="@string/thrust_label"
android:background="@android:color/#ffaa0000"
/>
</RelativeLayout>
2 Answers
![Jason Anders](https://uploads.teamtreehouse.com/production/profile-photos/3512822/micro_Jason_s-Pic.jpg)
Jason Anders
Treehouse Moderator 145,859 PointsHey Angel,
A Hex color value (which the challenge wants you to use) is not an android:color
. So, when using Hex colors, that is the only thing (the hex value) that should go in the quotes.
Give it another shot with that in mind. :)
![angel juarez](https://secure.gravatar.com/avatar/d38f2ab6bb31e2737c6eec5f8c83e93f?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
angel juarez
15,886 PointsThank you!