purna.sty

\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{purna}[Purna's Formatting Package]

\RequirePackage{mathpazo} % equivalent to usepackage{...}

% 'sans serif' option
\DeclareOption{sans}{
  \renewcommand{\familydefault}{\sfdefault}
}

% 'roman' option
\DeclareOption{roman}{
  \renewcommand{\familydefault}{\rmdefault}
}

% global indentation option
\newif\if@neverindent\@neverindentfalse
\DeclareOption{neverindent}{
  \@neverindenttrue
}

\ExecuteOptions{roman}

\ProcessOptions\relax % terminates the option processing.

\newlength{\parskipdefault} % create new length variable
\setlength{\parskipdefault}{1ex} % assign desired paragraph skip value to this variable
\newcommand{\neverskip}{ \setlength{\parskip}{0pt} }
\newcommand{\autoskip}{ \setlength{\parskip}{\parskipdefault} }

\newlength{\pardefault}
\setlength{\pardefault}{\parindent}
\newcommand{\neverindent}{ \setlength{\parindent}{0pt} }
\newcommand{\autoindent}{ \setlength{\parindent}{\pardefault} }

\if@neverindent
\neverindent
\fi

\if@neverskip
\neverskip
\fi

\RequirePackage{xcolor}
\colorlet{RedOrange}{red!70!orange}
\colorlet{DullRed}{red!40!white!70!black}
\colorlet{PalePurple}{purple!30!blue!40!gray}

% Text formatting
\newcommand{\highlight}[1]{\textcolor{RedOrange}{#1}}

\RequirePackage{hyperref}
\hypersetup{
    colorlinks=true,
    linkcolor=PalePurple,
    filecolor=PalePurple,      
    urlcolor=purple!20!blue,
    pdftitle={Document Title},
    pdfauthor={Purnanand Elango},
    citecolor=DullRed,
}

% Math definitions
\RequirePackage{amsmath,amssymb,amsthm,bm}

\newcommand{\opn}[1]{\operatorname{#1}}
\newcommand{\mb}[1]{\mathbb{#1}}
\newcommand{\mc}[1]{\mathcal{#1}}

\endinput