--- a/printer/printer.go	Sun May 07 14:12:56 2017 +0200
+++ b/printer/printer.go	Sun May 07 16:38:52 2017 +0200
@@ -31,6 +31,8 @@
 		return NewPrinterYAML(options)
 	case "template":
 		return NewPrinterTemplate(options)
+	case "theme":
+		return NewPrinterTheme(options)
 	}
 	return nil, fmt.Errorf("unhandled output format")
 }