Knowledge indicators

Building on A.Ellet's answer to produce something as required (three rectangles always in each group; green ones will show the skill level):

The code:

\documentclass{article}
\usepackage{tikz}

\definecolor{colori}{RGB}{249,193,158}
\definecolor{colorii}{RGB}{158,214,149}

\newcommand\skilllevel[1]{%%
\begin{tikzpicture}
\foreach \Val in {1,2,3}
{
  \node[fill=colori,inner ysep=0pt] 
  at ([yshift=2*\Val]0,\Val pt) {};
}
\foreach \Val in {1,...,#1}
{
  \node[fill=colorii,inner ysep=0pt] 
  at ([yshift=2*\Val]0,\Val pt) {};
}
\end{tikzpicture}%
}

\makeatother


\begin{document}

\noindent\begin{tabular}{lc}
German  &  \skilllevel{2}    \\
Latin  &  \skilllevel{1}     \\
Japanese  &  \skilllevel{3}  \\
\end{tabular}

\end{document}

Perhaps the following modification is less confusing (see Andrew Cashner's comment):

\documentclass{article}
\usepackage{tikz}

\definecolor{colori}{RGB}{249,193,158}
\definecolor{colorii}{RGB}{158,214,149}

\newcommand\skilllevel[1]{%%
\begin{tikzpicture}
\foreach \Val in {1,2,3}
{
  \node[draw,fill=white,inner ysep=1pt] 
  at ([yshift=2*\Val]0,\Val pt) {};
}
\foreach \Val in {1,...,#1}
{
  \node[draw,fill=colorii,inner ysep=1pt] 
  at ([yshift=2*\Val]0,\Val pt) {};
}
\end{tikzpicture}%
}

\begin{document}

\noindent\begin{tabular}{lc}
German  &  \skilllevel{2}    \\
Latin  &  \skilllevel{1}     \\
Japanese  &  \skilllevel{3}  \\
\end{tabular}

\end{document}

Just for fun, with picture mode:

\documentclass{article}
\usepackage{xcolor}

\newcommand{\skill}[1][3]{%
  \setlength{\unitlength}{1ex}%
  \begin{picture}(1,1.8)
    \linethickness{0.3ex}%
    \textcolor{gray!15}{\multiput(0, 0.15)(0, 0.6){3}{\line(1,0){1}}}
    \multiput(0, 0.15)(0, 0.6){#1}{\line(1,0){1}}
  \end{picture}%
}

\begin{document}
\begin{itemize}
  \item German \skill[3]
  \item English \skill[2]
  \item Chinese \skill[1]
  \item Default \skill
\end{itemize}
Testing \skill[1], winning \skill[2], and excellence \skill[3].
\end{document}

With stacks. I have chosen to keep the answer within the confines of normal line spacing, but that can be changed by invoking \setstackgap{L}{desired-baselineskip}. The bar thicknesses (1pt) and widths (1ex) are set within the \rl and \rlf definitions (as well as the colors). The vertical space between bars is set with \setstackgap{S}{1.5pt} and the gap between the words and the bars is set via \setstacktabbedgap{1ex}.

\documentclass{article}
\usepackage{tabstackengine,xcolor}
\def\rl{\textcolor{red}{\protect\rule{1ex}{1pt}}}
\def\rlf{\textcolor{red!15}{\protect\rule{1ex}{1pt}}}
\newcommand\level[1]{%
  \if 1#1\stackon{\stackon{\rl}{\rlf}}{\rlf}\else
    \if 2#1\stackon{\stackon{\rl}{\rl}}{\rlf}\else
      \if 3#1\stackon{\stackon{\rl}{\rl}}{\rl}\else
  \fi\fi\fi
}
\begin{document}
\renewcommand\stackalignment{l}
\setstackgap{S}{1.5pt}
\setstacktabbedgap{1ex}
\tabbedLongstack{German&\level{3}\\Latin&\level{2}\\Japanese&\level{1}}
\end{document} 

If one doesn't feel confortable with TABstacks, ordinary stacks can be used to achieve the same result by

\Longstack{German\\Latin\\Japanese}%
\hspace{1ex}%
\Longstack{\level{3}\\\level{2}\\\level{1}}