Change color of starred chapter headings

I want to make chapter headings colorful in a memoir. I've tried the approach proposed here. The only problem with this solution is that the unnumbered chapters remain unchanged. Is there a starred version of \printchaptername?

\documentclass[12pt,a4paper,oneside]{memoir}\usepackage{fontspec}\usepackage{xcolor}\usepackage{lipsum}\addtodef{\printchaptername}{\color{red}}{}\begin{document}\chapter*{Foo}\lipsum[1-3]\chapter{Bar}\lipsum[4-6]\end{document}