Welcome to APUG (or at least to APUG posting)...
The V54 fluorescent tubes are a combination of blue and green. Unfiltered the combined color appears as a strong aquamarine. I believe the tube that predates the V54 was a W45.
The W45 was also blue-green, but not as sharp cutting. If I recall correctly, mine was visually a more bluish in color rather than aquamarine. It was intended primarily for graded papers where only the blue was required.
I think the earlier general recommendation for W45s was to add some external yellow (minus blue) filtration in addition to the normal contrast filters to make it sort of work correctly with VC.
John has already given you the archive page for the Aristo product line. The overall Aristo-specific home page for the company (LCD Lighting, Inc.) that still manufactures repacement Aristo tubes is:
Also, here's a spectral distribution chart that compares the various Aristo fluorescent tubes side-by-side:
If you have any technical or sales questions regarding Aristo products, don't hesitate for a moment to contact Louise Kessler at:
You won't find a nicer or more knowledgable source for all things Aristo than her.