CiM's Marine and Tuscan Teal - having just done both - I thought I'd show you the two side-by-side.
Top mandrel is Marine (from the left, self, self, over clear)
Bottom mandrel is Tuscan Teal (from the left, self, over clear, over white)
The Tuscan Teal is a little more green, but is very similar in value (how dark it is). Both are intense enough to hold up to dilution, i.e. using over a lighter colour (such as white) or over clear.