Commercial Invoice Cover Letter

\documentclass[11pt,a4paper,addressstd]{dinbrief}

\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{xcolor}
\usepackage{array}
\usepackage{tcolorbox}

% dinbrief's page shipout crashes ("main@pdfcolorstack undefined") as soon as
% any color package is loaded, because the kernel's \@outputpage
% unconditionally calls \normalcolor to reset the header/footer color.
% Disabling that call is harmless here (colors inside the letter body use a
% different, unaffected mechanism) and avoids the crash.
\makeatletter
\global\let\normalcolor\relax
\makeatother

% booktabs/colortbl rules (\toprule, patched \hline, \rowcolor) rely on
% \futurelet-based lookahead that breaks inside the second or later
% tcolorbox on a dinbrief page; plain \hline plus bold text is used for all
% table emphasis below instead.

\definecolor{meridianNavy}{HTML}{1B2A4A}
\definecolor{meridianGold}{HTML}{B8862F}
\definecolor{slateInk}{HTML}{56606E}
\definecolor{paleSteel}{HTML}{EEF1F6}

\renewcommand{\yourmailmsg}{Your Reference, Your Letter of}
\renewcommand{\signmsgnew}{Our Reference, Invoice Date}
\renewcommand{\phonemsg}{Telephone}
\renewcommand{\writermsg}{}
\renewcommand{\datemsg}{Date}
\renewcommand{\enclname}{Enclosures}
\renewcommand{\ccname}{Distribution}
\renewcommand{\psname}{P.S.}

\address{%
\begin{minipage}[t]{\linewidth}
{\sffamily\bfseries\color{meridianNavy}\fontsize{20}{24}\selectfont MERIDIAN FABRICATION CO.}\\[1mm]
{\sffamily\color{meridianGold}\small STRUCTURAL STEEL \ $\bullet$ \ RACKING SYSTEMS \ $\bullet$ \ INDUSTRIAL INSTALLATION}\\[2mm]