High Res??

The focus is more on the 4 windows, rather than the wall they are in or surrounded by.

Very nice colors

The High Res is great, really sharp and full of detail, that we can't see in the small one.

Honestly I can't tell this was painted on a wall, even in high res. Although this is an awesome photo, it just doesn't show a wall in it. If there were grooved patterns of bricks or blocks from mortar falling out, that would be different, but this you can't tell.

Jawsh, take a closer look, there are areas in the image where you can see the texture on the wall.

Barely. It doesn't matter because the wall is far from the focus. The art hides a wall perfectly.

IMO, I would not call this an artistic take on a wall. I would call it documenting someone else's art.

you may have a point, but it is a wall, painted or otherwise, and therefore falls within the guidelines.