Korres. This was given to me by a friend in Greece as a Christmas present.
Korres is a Greek brand focusing on homeopathic remedies and natural/ organic skincare and make-up products. Their polishes are "silicone, acetone, phthalate, formaldehyde, camphor, toluene and xylene free" and the bottle says it contains Myrrh extract, Oligoelements and Pro Vitamin B5. I can't really say that's made a difference to my nails after only 1 use but I suppose it's good to know?!
In terms of colour, I know what you're thinking. OPI You Don't Know Jaques right? I did compare them and in my swatches, Korres Grey-Brown is a touch darker!
Maybe due to the "lack of chemicals", I didn't expect this polish to be very long lasting. And it wasn't! It started chipping after 3 days. The formula was relatively good, quite thin but opaque, 2 thin coats is all you need. However, as expected, drying time was slower than average.
I'm not sure how much these retail for but I think it's about €6.