Below: BB Couture's Disco Ball is a bright silver shade with holographic bar glitter as well as small silver glitter. The problem is, the bar glitter did not apply in an even manner, which is somewhat typical of this type of glitter. If you look closely, you can see some of the bars got covered up with the second coat, so the shape is there, just not the holographic color. It looks nicer in the bottle, as you can see in the close-up photo below this one.
These 2 silvery grey shades are from BB Couture's Disco Ball Collection. Hustle is a light grey shimmer with small silver glitter. I really love the way this one looks, because it's such a subtle shade of grey and the refined glitter adds just enough sparkle to dress it up. Disco Ball is most definitely more silver, having a somewhat foil finish and holographic bar glitter. It too is a shimmer, and with the bar glitter and silver glitter (which sometimes looks dark grey or black), you'd think it would appear more disco ball-ish! The bar glitter is holographic and it shows up fairly well in the bottle, but not so much on the nail. I used 2 coats on both of these and have no complaints, other than that I wish the look of Disco Ball in the bottle was the same look on the nail.