Cordova does not allow creating and editing resource files

Hi,

in my cordova plugin, I am trying to edit the resulting android apps `colors.xml` file. Unfortunately, by default the android app cordova creates does not have a `colors.xml` file - this means the following code does nothing, as a non existent file is simply ignored (without warning or error).

<config-file target="./res/values/colors.xml" parent="/resources">
    <color name="my-color">#F00000</color>
</config-file>

What I tried instead now was first creating the file by simply copying over an empty one with the `resource-file` directive and then editing it, resulting in a plugin.xml like the following:

<resource-file src="path/to/colors.xml" target="app/src/main/res/values/colors.xml" />

<config-file target="./res/values/colors.xml" parent="/resources">
    <color name="my-color">#F00000</color>
</config-file>

The file is copied to the correct place, but still not modified. I am guessing that `config-file` is somehow executed earlier than `resource-file`.

Also if I simply add my color to strings.xml, it works flawlessly - because the android app build with cordova does indeed contain a strings.xml by default.

What I would like to achieve now is either

a) make the `config-file` directive lazily create the colors.xml if it doesn't exist

b) create an empty colors.xml and fill it with the `config-file` directive

Any ideas are welcome!