These actually have more purple in them than it looks like in the sun, which is very bright today. The one with lots of green is fingering weight silk and wool, the three matching (I hope) space dyed teal-purple skeins are DK merino wool. The picture of all 4 skeins laid out on the table in the sun is probably the closest to how they really look. If you click on the picture to enlarge, that helps too.
I really like this dying method for the ease and safety, but food coloring is a little limited palette-wise. Black might be a welcome addition. Maybe it is time to branch out.