\documentclass{article}
\pagenumbering{gobble}
\usepackage{tikz}% http://ctan.org/pkg/pgf
\pagestyle{empty}% Remove page headers/footers
\usetikzlibrary{decorations.pathmorphing}
\usepackage{forloop}
\newcounter{row_number}

\newcommand\x{0}
\def\basiceval#1{\the\numexpr#1\relax}


\title{a \LaTeX  tribute to sol lewitt}
\author{finartcialist}
\begin{document}

\maketitle

\begin{quotation}
\noindent \textit{Wall Drawing \#797 (1995)}
\bigskip

\textit{ The first drafter has a black marker and makes an irregular horizontal line near the top of the wall. Then the second drafter tries to copy it (without touching it) using a red marker. The third drafter does the same, using a yellow marker. The fourth drafter does the same using a blue marker. Then the second drafter followed by the third and fourth copies the last line drawn until the bottom of the wall is reached.}
\end{quotation}

\bigskip

\begin{center}
\begin{tikzpicture}

\forloop[3]{row_number}{0}{\value{row_number}<7}{
	\pgfmathsetseed{\number\pdfrandomseed}

    	\draw[red,decorate,decoration={random steps,segment length=10pt,amplitude=10pt}] 
    	(1, \basiceval{\value{row_number}-1 }) -- (11, \basiceval{\value{row_number}-1});
	
	\pgfmathsetseed{\number\pdfrandomseed}
	\draw[yellow,decorate,decoration={random steps,segment length=10pt,amplitude=10pt}] 
    	(1, \basiceval{\value{row_number} -2 }) -- (11, \basiceval{\value{row_number} -2});
	
	\pgfmathsetseed{\number\pdfrandomseed}
	\draw[blue,decorate,decoration={random steps,segment length=10pt,amplitude=10pt}] 
    	(1, \basiceval{\value{row_number} -3}) -- (11, \basiceval{\value{row_number} -3});
	}
	
\pgfmathsetseed{\number\pdfrandomseed}
\draw[decorate,decoration={random steps,segment length=10pt,amplitude=10pt}](1, 6) -- (11, 6);
	
	
\end{tikzpicture}
\end{center}
\end{document}