定位 rgb 波条

Question

以垂直格式将 rgb 波形条定位在页面左侧的代码是什么？此外，当定位在页面底部时，为什么页面底部的行会缩短其长度 - 行应该填充文本的宽度？

    \documentclass[10pt,a4paper]{article}
    \usepackage{printlen}
    \usepackage{layouts}
    \usepackage{titlesec}
    \usepackage{multirow, makecell, tabularx, booktabs}
    \usepackage{babel}
    \usepackage{setspace}
    \usepackage{framed}
    \usepackage{blindtext}
    \renewcommand*\familydefault{\sfdefault}
    % \usepackage{chancery}
    %preamble
    \usepackage[
      height=8.5in,      % height of the text block
      width=6.5in,       % width of the text block
      top=78pt,        % distance of the text block from the top of the page
      headheight=60pt, % height for the header block
      headsep=12pt,    % distance from the header block to the text block
      heightrounded,   % ensure an integer number of lines
      %showframe,       % show the main blocks
      verbose,         % show the values of the parameters in the log file
    ]{geometry}
    \usepackage{enumitem}
    \usepackage[table]{xcolor}                      %for color of table
    \usepackage{booktabs}                        %for toprule midrule bottomrule in tables
    \usepackage{multirow} % Required for multirows
    \usepackage{longtable}
    \usepackage{rotating}
    \usepackage{lscape}
    \usepackage[utf8]{inputenc}
    \usepackage{fancyhdr}
    \usepackage[none]{hyphenat}                             %no hyphenation
    \usepackage{graphicx}
    \usepackage{float}
    \usepackage{lastpage}                                     %toget last page number
     \usepackage{indentfirst}
     \usepackage{smartdiagram}
    \usepackage{tikz,xcolor}
    \usetikzlibrary{shapes, arrows, matrix, calc}
    \usetikzlibrary{decorations.markings}
    \usetikzlibrary{arrows.meta,quotes,positioning}
    \usepackage{verbatim}
    \tikzstyle{process} = [rectangle, minimum width=3cm, minimum height=1cm, text centered, text width=2.5cm, draw=black, fill=blue!20]
    \tikzstyle{eff} = [ellipse,  minimum height=2em,  draw=black, fill=pink!20]
    \tikzstyle{arrow} = [thick,  ->, >=stealth]
    \usetikzlibrary{arrows,calc,positioning}
    \usetikzlibrary{positioning}
    \usetikzlibrary{matrix,fit,calc}
     \usepackage{fourier-orns}

    \renewcommand\headrule{%------------fancy top line of page
    \vspace{-6pt}
    \hrulefill
    \raisebox{-2.1pt}
    {\quad\decofourleft\decotwo\decofourright\quad}%
    \hrulefill}
    \renewcommand*\contentsname{Table of Contents}
    %-----------------------------------------
    \begin{document}
     \begin{titlepage}

    \rule{3mm}{.5pt}%
        \rule[-3mm]{.5pt}{1cm}%
        \rule{3mm}{.5pt}%

        \fontfamily{stix}\selectfont
    \pagecolor{brown!20}
    \begin{center}
    \headrule\\[.25in]
     {\MakeUppercase {\huge Quality Management System Manual}}\\[2mm]
    \headrule\\[4mm]
    \textsc{\Large as per requirements of std iso 9001:2015}    \\[4mm]
                                            \begin{figure}[H]
                                            \centering
                                            \includegraphics[scale=.4]{example-image-a} 
                                            \label{DGQA Logo}
                                            \end{figure}
    \vspace*{4em}
    \textsc{\normalsize CONTROLLERATE OF QUALITY ASSURANCE\\ARMOURED VEHICLE ELECTRONICS\\GOVERNMENT OF INDIA\\ MIN OF DEFENCE (DGQA)\\AVADI, CHENNAI -- 600 054\\tel: [phone], fax: [phone], email:} {\normalsize  [email protected]}\\ 
    \vfill
    \newcount\WL \unitlength.5pt
    \begin{center}
    \begin{picture}(460,60)(355,-10)
    \sffamily \tiny \linethickness{1.25\unitlength} \WL=360
    \multiput(360,0)(1,0){456}%
    {{\color[wave]{\the\WL}\line(0,1){50}}\global\advance\WL1}
    \linethickness{0.25\unitlength}\WL=360
    \multiput(360,0)(20,0){23}%
    {\picture(0,0)
    \line(0,-1){5} \multiput(5,0)(5,0){3}{\line(0,-1){2.5}}
    \put(0,-10){\makebox(0,0){\the\WL}}\global\advance\WL20
    \endpicture}
    \end{picture}
    \end{center}
    \line(1,0){400}\\
    \scriptsize NOT TO BE COPIED OR REPRODUCED IN FULL OR PART WITHOUT PERMISSION OF CONTROLLER, CQA(AVL)
    \end{center}
    \rule{3mm}{.5pt}%
        \rule[-3mm]{.5pt}{1cm}%
        \rule{3mm}{.5pt}%
    \end{titlepage}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
    \begin{appendix}
    \addcontentsline{toc}{section}{\numberline{}Annexures}
    \end{appendix}
    \end{document}