I absolutely adore my Cedar Blue Parker "51". It's my second-favorite pen, and would be tied for first place if not for the sentimental value attached to my Pelikan.

Today I filled it with Visconti Blue, and the result surprised me: not because the ink looks better than I expected -- I love this ink -- but because it left me feeling strangely disappointed and unfulfilled. It's a beautiful blue, but it's somehow... lacking.
What I want, what I
need for this pen, is an ink that is
precisely the wonderful dark navy grey-blue-black shade of Cedar Blue.
Might anyone know of an ink, or an ink mix, that would meet this need? Or be able to give me a hint or two that might lead me to the right mix?