“...a bulb manufacturer could print a “freebie” flyer or card with a bunch of color swatches;”
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Sounds like a great idea to me. Then I realize that not everyone has the same sensitivity to color differences. Perhaps color discrimination is a genetic gift like perfect pitch or a nose for wine, and most people are not bothered by color changes in artificial light.
It would probably be impossible to print the swatches in such a way that everyone would perceive both halves as being the exact same color in daylight or the "good" fluorescent, but not under typical fluorescent light. On the other hand, one could print the patches in such a way that 99% of the population would regard the two halves of each square as being at least a pretty good match under "good" light, but a really lousy match under the "bad" light. For example, a square could be constructed so that under most types of lighting it would look orange, but under some particular fluorescent light it would look magenta. Unfortunately there are probably enough different formulations of fluorescent lights that it would probably be hard to design a set of patches that cause every commonly-produced light to badly render at least one color, but I don't know enough about spectral characteristics to know what would be easy or hard. Perhaps a tethered diffraction grating would be a more useful demonstration apparatus.