Mrthfx

I am writing a style guide documentation and I want to make visually appealing what the document was updated using the cover color.

The main idea is to automatically update cover color based on the month when the document was compiled.

The cover colors are defined as coverBackground and coverFont.

documentclass[12pt,a4paper]{book}

usepackage[margin=2cm]{geometry}

usepackage{xcolor}

definecolor{grayOne}{rgb}{0.95, 0.95, 0.96}



definecolor{coverBackground}{rgb}{0.952, 0.929, 0.858}

definecolor{coverFont}{rgb}{0.223, 0.239, 0.313}



usepackage[backgroundcolor=grayOne,linecolor=white]{mdframed}



begin{document}



    begin{titlepage}

        begin{mdframed}[backgroundcolor=coverBackground]

            centering

            vspace*{.25textheight}

            textcolor{coverFont}{Huge Page title}\

            vspace{10pt}par

            textcolor{coverFont}{today}\

            vspace*{.25textheight}

        end{mdframed}

    end{titlepage}



end{document}

I also have a utility file where I have defined a large set of colors it would be great to use them.

    %--------------------------------------------

    %   Open Color Palette

    %   https://yeun.github.io/open-color/

    %--------------------------------------------

    % GRAY

    definecolor{grayZero}{rgb}{0.97, 0.98, 0.98}

    definecolor{grayOne}{rgb}{0.95, 0.95, 0.96}

    definecolor{grayTwo}{rgb}{0.91, 0.93, 0.94}

    definecolor{grayThree}{rgb}{0.87, 0.89, 0.9}

    definecolor{grayFour}{rgb}{0.81, 0.83, 0.85}

    definecolor{grayFive}{rgb}{0.68, 0.71, 0.74}

    definecolor{graySix}{rgb}{0.53, 0.56, 0.59}

    definecolor{graySeven}{rgb}{0.29, 0.31, 0.34}

    definecolor{grayEight}{rgb}{0.2, 0.23, 0.25}

    definecolor{grayNine}{rgb}{0.13, 0.15, 0.16}



    % RED

    definecolor{redZero}{rgb}{1.0, 0.96, 0.96}

    definecolor{redOne}{rgb}{1.0, 0.89, 0.89}

    definecolor{redTwo}{rgb}{1.0, 0.79, 0.79}

    definecolor{redThree}{rgb}{1.0, 0.66, 0.66}

    definecolor{redFour}{rgb}{1.0, 0.53, 0.53}

    definecolor{redFive}{rgb}{1.0, 0.42, 0.42}

    definecolor{redSix}{rgb}{0.98, 0.32, 0.32}

    definecolor{redSeven}{rgb}{0.94, 0.24, 0.24}

    definecolor{redEight}{rgb}{0.88, 0.19, 0.19}

    definecolor{redNine}{rgb}{0.79, 0.16, 0.16}



    % PINK

    definecolor{pinkZero}{rgb}{1.0, 0.94, 0.96}

    definecolor{pinkOne}{rgb}{1.0, 0.87, 0.92}

    definecolor{pinkTwo}{rgb}{0.99, 0.76, 0.84}

    definecolor{pinkThree}{rgb}{0.98, 0.64, 0.76}

    definecolor{pinkFour}{rgb}{0.97, 0.51, 0.67}

    definecolor{pinkFive}{rgb}{0.94, 0.4, 0.58}

    definecolor{pinkSix}{rgb}{0.9, 0.29, 0.5}

    definecolor{pinkSeven}{rgb}{0.84, 0.2, 0.42}

    definecolor{pinkEight}{rgb}{0.76, 0.15, 0.36}

    definecolor{pinkNine}{rgb}{0.65, 0.12, 0.3}



    % GRAPE

    definecolor{grapeZero}{rgb}{0.97, 0.94, 0.99}

    definecolor{grapeOne}{rgb}{0.95, 0.85, 0.98}

    definecolor{grapeTwo}{rgb}{0.93, 0.75, 0.98}

    definecolor{grapeThree}{rgb}{0.9, 0.6, 0.97}

    definecolor{grapeFour}{rgb}{0.85, 0.47, 0.95}

    definecolor{grapeFive}{rgb}{0.8, 0.36, 0.91}

    definecolor{grapeSix}{rgb}{0.75, 0.29, 0.86}

    definecolor{grapeSeven}{rgb}{0.68, 0.24, 0.79}

    definecolor{grapeEight}{rgb}{0.61, 0.21, 0.71}

    definecolor{grapeNine}{rgb}{0.53, 0.18, 0.61}



    % VIOLET

    definecolor{violetZero}{rgb}{0.95, 0.94, 1.0}

    definecolor{violetOne}{rgb}{0.9, 0.86, 1.0}

    definecolor{violetTwo}{rgb}{0.82, 0.75, 1.0}

    definecolor{violetThree}{rgb}{0.69, 0.59, 0.99}

    definecolor{violetFour}{rgb}{0.59, 0.46, 0.98}

    definecolor{violetFive}{rgb}{0.52, 0.37, 0.97}

    definecolor{violetSix}{rgb}{0.47, 0.31, 0.95}

    definecolor{violetSeven}{rgb}{0.44, 0.28, 0.91}

    definecolor{violetEight}{rgb}{0.4, 0.25, 0.85}

    definecolor{violetNine}{rgb}{0.37, 0.24, 0.77}



    % INDIGO

    definecolor{indigoZero}{rgb}{0.93, 0.95, 1.0}

    definecolor{indigoOne}{rgb}{0.86, 0.89, 1.0}

    definecolor{indigoTwo}{rgb}{0.73, 0.78, 1.0}

    definecolor{indigoThree}{rgb}{0.57, 0.65, 1.0}

    definecolor{indigoFour}{rgb}{0.45, 0.56, 0.99}

    definecolor{indigoFive}{rgb}{0.36, 0.49, 0.98}

    definecolor{indigoSix}{rgb}{0.3, 0.43, 0.96}

    definecolor{indigoSeven}{rgb}{0.26, 0.39, 0.92}

    definecolor{indigoEight}{rgb}{0.23, 0.36, 0.86}

    definecolor{indigoNine}{rgb}{0.21, 0.31, 0.78}



    % CYAN

    definecolor{cyanZero}{rgb}{0.89, 0.98, 0.99}

    definecolor{cyanOne}{rgb}{0.77, 0.96, 0.98}

    definecolor{cyanTwo}{rgb}{0.6, 0.91, 0.95}

    definecolor{cyanThree}{rgb}{0.4, 0.85, 0.91}

    definecolor{cyanFour}{rgb}{0.23, 0.79, 0.86}

    definecolor{cyanFive}{rgb}{0.13, 0.72, 0.81}

    definecolor{cyanSix}{rgb}{0.08, 0.67, 0.75}

    definecolor{cyanSeven}{rgb}{0.06, 0.6, 0.68}

    definecolor{cyanEight}{rgb}{0.05, 0.52, 0.6}

    definecolor{cyanNine}{rgb}{0.04, 0.45, 0.52}



    % BLUE

    definecolor{blueZero}{rgb}{0.91, 0.96, 1.0}

    definecolor{blueOne}{rgb}{0.82, 0.92, 1.0}

    definecolor{blueTwo}{rgb}{0.65, 0.85, 1.0}

    definecolor{blueThree}{rgb}{0.45, 0.75, 0.99}

    definecolor{blueFour}{rgb}{0.3, 0.67, 0.97}

    definecolor{blueFive}{rgb}{0.2, 0.6, 0.94}

    definecolor{blueSix}{rgb}{0.13, 0.55, 0.9}

    definecolor{blueSeven}{rgb}{0.11, 0.49, 0.84}

    definecolor{blueEight}{rgb}{0.1, 0.44, 0.76}

    definecolor{blueNine}{rgb}{0.09, 0.39, 0.67}



    % TEAL

    definecolor{tealZero}{rgb}{0.9, 0.99, 0.96}

    definecolor{tealOne}{rgb}{0.76, 0.98, 0.91}

    definecolor{tealTwo}{rgb}{0.59, 0.95, 0.84}

    definecolor{tealThree}{rgb}{0.39, 0.9, 0.75}

    definecolor{tealFour}{rgb}{0.22, 0.85, 0.66}

    definecolor{tealFive}{rgb}{0.13, 0.79, 0.59}

    definecolor{tealSix}{rgb}{0.07, 0.72, 0.53}

    definecolor{tealSeven}{rgb}{0.05, 0.65, 0.47}

    definecolor{tealEight}{rgb}{0.04, 0.57, 0.41}

    definecolor{tealNine}{rgb}{0.03, 0.5, 0.36}



    % GREEN

    definecolor{greenZero}{rgb}{0.92, 0.98, 0.93}

    definecolor{greenOne}{rgb}{0.83, 0.98, 0.85}

    definecolor{greenTwo}{rgb}{0.7, 0.95, 0.73}

    definecolor{greenThree}{rgb}{0.55, 0.91, 0.6}

    definecolor{greenFour}{rgb}{0.41, 0.86, 0.49}

    definecolor{greenFive}{rgb}{0.32, 0.81, 0.4}

    definecolor{greenSix}{rgb}{0.25, 0.75, 0.34}

    definecolor{greenSeven}{rgb}{0.22, 0.7, 0.3}

    definecolor{greenEight}{rgb}{0.18, 0.62, 0.27}

    definecolor{greenNine}{rgb}{0.17, 0.54, 0.24}



    % LIME

    definecolor{limeZero}{rgb}{0.96, 0.99, 0.89}

    definecolor{limeOne}{rgb}{0.91, 0.98, 0.78}

    definecolor{limeTwo}{rgb}{0.85, 0.96, 0.64}

    definecolor{limeThree}{rgb}{0.75, 0.92, 0.46}

    definecolor{limeFour}{rgb}{0.66, 0.89, 0.29}

    definecolor{limeFive}{rgb}{0.58, 0.85, 0.18}

    definecolor{limeSix}{rgb}{0.51, 0.79, 0.12}

    definecolor{limeSeven}{rgb}{0.45, 0.72, 0.09}

    definecolor{limeEight}{rgb}{0.4, 0.66, 0.06}

    definecolor{limeNine}{rgb}{0.36, 0.58, 0.05}



    % YELLOW

    definecolor{yellowZero}{rgb}{1.0, 0.98, 0.86}

    definecolor{yellowOne}{rgb}{1.0, 0.95, 0.75}

    definecolor{yellowTwo}{rgb}{1.0, 0.93, 0.6}

    definecolor{yellowThree}{rgb}{1.0, 0.88, 0.4}

    definecolor{yellowFour}{rgb}{1.0, 0.83, 0.23}

    definecolor{yellowFive}{rgb}{0.99, 0.77, 0.1}

    definecolor{yellowSix}{rgb}{0.98, 0.69, 0.02}

    definecolor{yellowSeven}{rgb}{0.96, 0.62, 0.0}

    definecolor{yellowEight}{rgb}{0.94, 0.55, 0.0}

    definecolor{yellowNine}{rgb}{0.9, 0.47, 0.0}



    % ORANGE

    definecolor{orangeZero}{rgb}{1.0, 0.96, 0.9}

    definecolor{orangeOne}{rgb}{1.0, 0.91, 0.8}

    definecolor{orangeTwo}{rgb}{1.0, 0.85, 0.66}

    definecolor{orangeThree}{rgb}{1.0, 0.75, 0.47}

    definecolor{orangeFour}{rgb}{1.0, 0.66, 0.3}

    definecolor{orangeFive}{rgb}{1.0, 0.57, 0.17}

    definecolor{orangeSix}{rgb}{0.99, 0.49, 0.08}

    definecolor{orangeSeven}{rgb}{0.97, 0.4, 0.03}

    definecolor{orangeEight}{rgb}{0.91, 0.35, 0.05}

    definecolor{orangeNine}{rgb}{0.85, 0.28, 0.06}