Guys, I was fed up with the Vertex Maia theme.
I really prefered the flat style of Numix.
And I wanted an easy way to grab the window with the mouse without any of those silly XFCE workarounds.
(The XFCE border size problem- the Xfce Window border is too thin to grab).
Here is the numix-manjaro-borders a mix of the numix-manjaro and the “straight” version.