section{color{ForestGreen}Rhetoric And Composition}

section{textcolor{ForestGreen}{Rhetoric And Composition}}

documentclass{article}
usepackage[usenames,dvipsnames,svgnames,table]{xcolor}
usepackage{hyperref}

begin{document}

tableofcontents

section{color{ForestGreen}Rhetoric And Composition}

end{document}

{color{ForestGreen}section{Rhetoric And Composition}}

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makeatother

section{Rhetoric And Composition}

documentclass{article}
usepackage[dvipsnames]{xcolor}
usepackage{hyperref}
usepackage{bookmark}
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begin{document}
section{color{ForestGreen}Hello World}
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documentclass{article}
usepackage[dvipsnames]{xcolor}
usepackage{titlesec}
usepackage{hyperref}
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begin{document}
tableofcontents
section{Hello World}
subsection{Foobar}
end{document}

section[<Text>]{color{<color>}<text>}