documentclass[twoside,openright,14paper]{memoir}

usepackage[usenames,dvipsnames]{color}
usepackage{graphicx}
renewcommandcolorchapnum{color{PineGreen}}
renewcommandcolorchaptitle{color{PineGreen}}
chapterstyle{pedersen}

begin{document}

chapter{Chapter heading}

    Words just under the chapter heading.

end{document}