Changing the color of statusbar is available from Lollipop
but actually you could change the color of statusbar for Api >= 19
inside the style of value-v19 put
<?xml version="1.0" encoding="utf-8"?>
<resources>
<style name="AppTheme" parent="MaterialDrawerTheme.Light">
<!-- Customize your theme here. -->
<item name="android:windowNoTitle">true</item>
<item name="android:windowTranslucentStatus">true</item>
.....
</style>
</resources>
the background color of the status bar will became transparent color, and for coloring it you just put a background color in your to your app so the status bar will take that color
hope that was clear and helpful