My manicure today is this super dark, vampy red from the Fall 2010 Swiss Collection. William Tell Me About OPI basically looks black in low lighting, but if you were to hold your nails up to something actually black, you would see a difference.
The formula for this color is quite nice, and I had no trouble controlling the application. Two coats gave opaque coverage. These pictures are without topcoat, so you can see the finish is very glossy even on its own. I think this color has a very rich, luxurious feel.