\documentclass[landscape,pagesize]{scrartcl}

\newcommand*{\fname}{Telegramm-1009}
\newlength{\rand}
\setlength{\rand}{1mm}

\pdfminorversion 3
\usepackage{calc}
\setlength\paperheight{210mm+2\rand}% 148mm + 1mm + 1mm
\setlength\paperwidth{297mm+2\rand}%  210mm + 1mm + 1mm

\usepackage{pdfpages,xcolor,picture}
% [RGB]{0,77,159} [RGB]{255,237,0}

\newcommand*\FarbRandI{%
%   \AddToShipoutPicture*{%
%     \AtPageLowerLeft{%
%       \textcolor{white}{\rule{\paperwidth}{\paperheight}}}%
%   }%
  \AddToShipoutPicture*{%
    \AtPageLowerLeft{%
      \textcolor[RGB]{255,237,0}%
%       \textcolor{red}%
	  {\rule{.5\paperwidth}{\paperheight}}}%
  }%
%   \AddToShipoutPicture*{%
%     \put(106mm,0mm){%
%       \textcolor[RGB]{0,77,159}%
% % 	\textcolor{white}%
%       {\rule{106mm}{38mm+\rand}}}%
%   }%
}

\newcommand*\FarbRandII{%
  \AddToShipoutPicture*{%
    \AtPageLowerLeft{%
      \textcolor{red}{\rule{\paperwidth}{\paperheight}}}%
  }%
  \AddToShipoutPicture*{%
    \put(\rand,\rand){%
      \textcolor{white}{\rule{297mm}{210mm}}}%
  }%
}

\begin{document}
% 	\FarbRandI
% 	\FarbRandII
	\includepdf[pages={4,1},nup={2x1},noautoscale]{\fname .pdf}
% 	\FarbRandI
% 	\FarbRandII
% 	\includepdf[pages={3,2},nup={2x1},angle=180,origin=c,noautoscale]{\fname .pdf}
	\includepdf[pages={2,3},nup={2x1},noautoscale]{\fname .pdf}
\end{document}
