I just did my first Liver Flush and came out with about maybe 100 very small pea green sized clumps and maybe a couple of large green clumps which is soft and waxy and when ripped open, there is a dark green almost flourescent centre.
Your argument about macadamia nut oil is intriguing however, the extra virgin olive oil that I use is also transparent with maybe a very light brown hue to it so is probably very similar to the strawberry hue of the macadamia nut oil. I don't believe the green colour comes from the olive oil at all. I think it comes from the bile which is mixed with the olive oil and maybe even some of the magnesium sulphate crystals may have solidified inside the wax ball forming a dark green bile coated somewhat crystaline interior.
I myself simply do not know but am not entirely convinced from the results of my own first liver flush. I'd like to believe that they were stones but still am not sure. It may be that for my particular case, what came out was not stones. But certainly from the pictures I see for others who have experienced a successful flush, they do appear to be stones, particularly the tan coloured solidified clumps. I did not see any of those in my flush.