I probably should have realized that the color would be off when the photo of the "blue nubuck" looked exactly like the photo of the "blue-green".  I was looking for a turquoise/aqua flat.  The blue-green color wasn't available in my size, so I went with blue nubuck, which looked surprisingly similar to blue-green.  The shoes arrived quicker than I expected.  They fit great, but the color was definitely not turquoise/aqua.  The blue nubuck is more cobalt/royal blue.  They're really cute and seem comfortable, so I'm keeping them even though I won't be able to wear them with what I intended to wear them with.