sql_etap_1/app/src/main/res/values/styles.xml

<resources>

    <!-- Base application theme. -->
    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
        <!-- Customize your theme here. -->
        <item name="colorPrimary">@color/colorGray</item>
        <item name="colorPrimaryDark">@color/colorGrayShtorka</item>
        <item name="colorAccent">@color/colorVidelenie</item>
    </style>

</resources>