you know what's funny. I was looking online the other day for pictures of the cards to show someone. I found photos on APIs website, and they showed both the freshwater and saltwater cards side by side, well enough that you could see the difference in colors. But, my card, labeled saltwater, was a closer match to the freshwater card colors on my monitor.
I understand monitors don't necessarily depict true colors, but I thought it interesting that my saltwater card matched the freshwater labeled card pretty much exactly.
Then, I went digging for an old kit I had and found it's card. Also labeled saltwater, matched the saltwater card on my monitor.
Laid the 2 cards, both labeled saltwater, side by side, and they were different from one another.
Explain that one...