I am trying to color every other grouping of 5 rows light gray, starting with the first 5 rows. I have attempted to use the solution posted here Does something like \rowcolors exist for groups of rows? . However, there are several problems. My original (uncolored; see below) looks great. However, when I try to color the rows (see below) the pdf looks terrible with missing rows and the printed version starts 1 row to late ( i.e., the first 5 line should be gray). So in summary I would like the pdf to look as nice as the printed and have the coloring start 1 row sooner. I have attached compilable code to reproduce the document and images of the output on my end below.
Code
\documentclass[letterpaper,11pt,oneside, notitlepage]{article}% calls document type
\usepackage[usenames, dvipsnames, table, xcdraw]{xcolor}
\usepackage{booktabs}% table utilities
\usepackage{siunitx}% number and symbol alignment
\usepackage{graphicx}
\newcommand\VRule[1][\arrayrulewidth]{\vrule width #1}
\makeatletter
\newcommand{\groupedRowColors}[5][0]{% [#1: offset], #2: group size, #3: start line, #4: color 1, #5: color 2
% copied from xcolor.sty
\global\rownum=\z@
\global\@rowcolorstrue
\@ifxempty{#4}%
{\def\@oddrowcolor{\@norowcolor}}%
{\def\@oddrowcolor{\gdef\CT@row@color{\CT@color{#4}}}}%
\@ifxempty{#5}%
{\def\@evenrowcolor{\@norowcolor}}%
{\def\@evenrowcolor{\gdef\CT@row@color{\CT@color{#5}}}}%
% simplified (no check for \if@rowcmd)
\def\@rowcolors{%
\if@rowcolors
\noalign{%
\relax
\ifnum\rownum<#3
\@norowcolor
% I have changed this check:
\else \ifodd \numexpr (\rownum-#1)/#2\relax
\@oddrowcolor
\else
\@evenrowcolor
\fi \fi
}%
\fi
}%
\CT@everycr{\@rowc@lors\the\everycr}%
\ignorespaces
}
\makeatother
\usepackage[letterpaper,bindingoffset=-.35in,%
left=1in,right=1in,top=.25in,bottom=.25in,%
footskip=.15in]{geometry}
\begin{document}
\thispagestyle{empty}
\belowrulesep=0pt
\aboverulesep=0pt
\heavyrulewidth=2pt
\begin{table}[t!]
\begin{tabular}[l]{|p{.6in}|p{2.46in}|p{1in}|p{2.46in}| }
\toprule
\multicolumn{4}{!{\VRule[2pt]}l!{\VRule[2pt]}}{}\\
\multicolumn{4}{!{\VRule[2pt]}l!{\VRule[2pt]}}{\textbf{Date}\rule{.8in}{.1pt} \hspace{.69in} \textbf{Crew}\rule{2.4in}{.1pt}\hspace{1.2in} \textbf{Page}\rule{.2in}{.1pt} \textbf{of}\rule{.25in}{.1pt}} \\
\multicolumn{4}{!{\VRule[2pt]}l!{\VRule[2pt]}}{}\\
\multicolumn{4}{!{\VRule[2pt]}l!{\VRule[2pt]}}{\textbf{Species}\rule{.95in}{.1pt}\hfill \textbf{Location}\rule{.95in}{.1pt}\hfill \textbf{Project}\rule{.95in}{.1pt}}\\
\multicolumn{4}{!{\VRule[2pt]}l!{\VRule[2pt]}}{}\\
\bottomrule
\end{tabular}
\end{table}
\vspace*{-2.75\baselineskip}
\begin{centering}
\begin{table}[bh!]
\groupedRowColors{5}{1}{gray!20}{white} %<------line that is supposed to color by group
\begin{tabular}{!{\VRule[2pt]}p{.6in}|p{2.46in}|p{1in}|p{2.46in}!{\VRule[2pt]}}
\toprule
\textbf{Count} & \textbf{PIT Tag \#} & \textbf{Length(TL)} & \textbf{Comments}\\
\bottomrule
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\hline
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\toprule
\multicolumn{4}{!{\VRule[2pt]}l!{\VRule[2pt]}}{\textbf{Scanned}\rule{.6in}{.1pt}\hfill \textbf{Entered}\rule{.6in}{.1pt}\hfill \textbf{Checked}\rule{.6in}{.1pt}\hfill \textbf{Double Checked}\rule{.6in}{.1pt}}\\
\bottomrule
\end{tabular}
\end{table}
\end{centering}
\vspace*{-1\baselineskip}
\small\textit{\textbf{*} Max 40 fish per sheet}\hspace{.5in}\textbf{Notes:}
\end{document}
This is what the original pdf looks like without coloring:
This is what it looks like after I apply the solution:
Printed
