it is not. It is not Manjaro specific.
it is for use with XFCE.
And it is solely linked to Numix.

   ............
> Nadir Boussoukaia  <


On Mon, Nov 4, 2019 at 4:03 AM <notify@aur.archlinux.org> wrote:
grazzolini [1] filed a deletion request for numix-manjaro-borders [2]:

Manjaro specific

[1] https://aur.archlinux.org/account/grazzolini/
[2] https://aur.archlinux.org/pkgbase/numix-manjaro-borders/