colors.xml gets overwritten by firebasex if there is only one color in it

[RaederDev]

I have a custom colors.xml with one color in it in order to use the new adaptive icons feature that cordova provides:

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <color name="background">#000000</color>
</resources>

This gets overwritten by firebasex like so:

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <color name="accent">#FF00FFFF</color>
</resources>

However when I add a second (useless) color to my configuration firebasex merged the config like it should:

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <color name="background">#000000</color>
    <color name="background_blk">#000000</color>
</resources>

After build:

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <color name="background">#000000</color>
    <color name="background_blk">#000000</color>
    <color name="accent">#FF00FFFF</color>
</resources>

It would be good if it also works with only one color since that's what the cordova documentation shows for adaptive icons.