# How to change line width of a column in table? [closed]

How to change line width of a column in table? I colored the table and some column lines aren't appearing, It's so tight that only with zoom it appears

\definecolor{cNaoImplementado}{rgb}{0.80,0.80,0.80}
...
\begin{landscape}
\chapter{Product Backlog}
% Table generated by Excel2LaTeX from sheet 'Plan1'
\begin{longtable}{|p{0.5in}|p{6in}|c|c|}

\hline
{\bf ID} & {\bf Users Stories} & {\bf Tempo Previsto} & {\bf Status} \\

1 & Como professor, eu quero decidir quais compromissos são públicos ou privados para manter sigilo. &         10 & Implementado \\

2 & Como professor, eu quero a partir de uma disciplina cadastrar um plano de ensino com o programa e as bibliografias suplementares para as disciplinas que eu vou ministrar. &         40 & Implementado \\

3 & Como professor, eu quero cadastrar meus compromissos no sistema para que todos saibam quando não posso agendar outro compromisso. &         40 & Implementado \\
\hline
\end{longtable}
\end{landscape}


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## closed as too localized by lockstep, Kurt, diabonas, Stefan Kottwitz♦Oct 11 '12 at 22:05

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For a global line width modification, \setlength{\arrayrulewidth}{1pt} works. –  Werner Sep 17 '12 at 23:27
Can we see a minimal document with a simple table showing the way you apply color and the problematic lines? –  Gonzalo Medina Sep 17 '12 at 23:31
@GonzaloMedina I just updated with an example –  Rafael Sep 18 '12 at 0:01
@Rafael perhaps it's just a viewer issue? –  Gonzalo Medina Sep 18 '12 at 0:50
@GonzaloMedina Well I guess so, I tested it on texStudio viewer and viewing generated PDF –  Rafael Sep 18 '12 at 0:57