I was very excited to try this out when I picked up Diva Deluxe. These glosses promise lovely colors that "[capture] all the light of a prism" -- which is to say that they are duochromes according to the display. Diva Deluxe is supposed to be a bright pink with a gold duochrome.
Unfortunately, these glosses do not deliver. There was very little gold shine in the tube and absolutely none on the lips, and even the nice pink color doesn't last long. What really turned me off, however, was the texture: it's very oily, almost as if I put vegetable oil on my lips and add some pigment. Pretty gross, to be honest.
I've heard good things about other Black Radiance products, so I hope they're better!