ok, after looking at the offecial threads of mystic blue and monaco blue, it seems that the E60 i showed is "mystic blue"...
Monaco blue is very very dark, almost black...
here's the official mystic blue thread:
http://www.e90post.com/forums/showthread.php?t=1786
and here's for the monaco blue:
http://www.e90post.com/forums/showthread.php?t=244