I'm using a custom pgfpages layout in which the pages partially overlap.

I'm wondering if it is possible to change the z-order of the pages so that in the following example, the red page would overlap the green page? 

I have alternative solutions with externalising the included document and similar, but I'm curious if this would be possible with pgfpages.


```
\documentclass{article}

\usepackage{xcolor}
\usepackage{lmodern}
\usepackage{pgfpages}

\pgfpagesdeclarelayout{quack}
{
  \edef\pgfpageoptionheight{\the\paperheight} 
  \edef\pgfpageoptionwidth{\the\paperwidth}
  \edef\pgfpageoptionborder{0pt}
}
{
  \pgfpagesphysicalpageoptions
  {%
    logical pages=2,%
    physical height=\pgfpageoptionheight,%
    physical width=\pgfpageoptionwidth%
  }
  \pgfpageslogicalpageoptions{1}
  {%
    border shrink=\pgfpageoptionborder,%
    resized width=.8\pgfphysicalwidth,%
    resized height=.8\pgfphysicalheight,%
    rotation=-20,%
    center=\pgfpoint{.4\pgfphysicalwidth}{.5\pgfphysicalheight}%
  }%
  \pgfpageslogicalpageoptions{2}
  {%
    border shrink=\pgfpageoptionborder,%
    resized width=.8\pgfphysicalwidth,%
    resized height=.8\pgfphysicalheight,%
    rotation=-20,%
    center=\pgfpoint{.6\pgfphysicalwidth}{.5\pgfphysicalheight}%
  }%
}

\pgfpagesuselayout{quack}[landscape]

\begin{document}

\fontsize{100}{100}\selectfont

\pagecolor{red}1

\newpage

\pagecolor{green}2

\end{document}
```


![document-1.png](/image?hash=007e8a701d734a3d85486c21b314e95ffd09fbd731fedf210d6195e2104a4169)

### Desired result:

![document.png](/image?hash=a02a78fa87d76f68a2f35702eb62cc0a49c35680cd329de3c3b92759813b4307)