C: A00 CAPABILITY
S: * CAPABILITY IMAP4rev1 IMAP4rev2 LIST-EXTENDED LIST-METADATA METADATA
S: A00 OK Completed.      
C: A01 LIST "" % RETURN (METADATA ("/shared/vendor/cmu/cyrus-imapd/color"))
S: * LIST () "." "INBOX"
S: * METADATA INBOX ("/shared/vendor/cmu/cyrus-imapd/color" "#b71c1c")
S: * LIST () "." "foo"
S: * METADATA "foo" ("/shared/vendor/cmu/cyrus-imapd/color" NIL)
S: * LIST (\NonExistent) "." "bar"
S: A01 OK List completed.