Wet ‘n’ Wild Gray’s Anatomy Fast Dry Nail Color ($1.99 for 0.46 fl. oz.) is a semi-sheer duochrome featuring both a murky, grayish green and an iridescent but played down violet. Under flash, it photographed as a purple polish and didn’t come across as sheer. In natural light, the grayish-green cast is more noticeable while the violet takes a backseat. The duochrome is there, but it isn’t as strong as it could be, due to the sheerness of the formula. I see this working better as a layering shade than alone. I did three coats and it wasn’t anywhere near opaque.