The "minus green" card may have over compensated because this image looks too pink to me. But maybe that's just because the room truly is horrible and green, so I'm responding to the horrible green uncalibrated photo as more realistic.

I took these to class and everyone, including the teacher, agreed that the green card made everything too pink. Sonia suggested that maybe the sunlight coming in the windows was having more impact that we thought. In any case, I don't think I'll be buying the warm cards anytime soon ($100 for the set!).