OK. Thanks. I read it wrong then. My bad.

At least it clears it up for me, as I was under the impression that while the mantling could be gules doubled argent that the wreath remained of the colors so to speak.

Dennis,
Donnchadh wrote:

...I was under the impression that while the mantling could be gules doubled argent that the wreath remained of the [shield] colors so to speak.

They can, that is what he is saying:
Micheál Ó Comáin wrote:

...‘Gules doubled argent’ is the default colouring of mantlings in this Office…...The torse is usually the main colour and metal of the shield….

My emphasis.  I also added [shield] to your sentence, as that is what I inferred.  If you did not mean "shield", then I’m wrong.