%this is the way to redefine styles
% \newpsstyle{mytickstyle}{linewidth=1pt,linecolor=blue}

\renewcommand{\betweenticks}{200}
\bardiagrambegin{9.5}{1000}{2cm}{1}{2}{1cm}{0.01cm}
    \drawlevellines
    \baritem{Jelger}{721}{green}
    \baritem{Johan}{412}{red}
    \baritem{Rikkert}{810}{yellow}
    \baritem{Henk}{310}{green}
    \baritem{Erwin}{542}{red}  
    %
    % we can call
    %  \diagLegendoptions{yellow}{red}{0.5pt}
    % to produce a legend with yellow background with red frame
    % with linewidth=0.5pt
    %
    \diagLegendbegin{5.63}{970.3}{5.0}
      \diagLegenditem{Full year}{green}
      \diagLegenditem{Less than a year}{red}
      \diagLegenditem{Less than 6 months}{yellow}
    \diagLegendend
\bardiagramend{}{\large Jobs Submitted}