As others have said, Belightful is just the WN. They're completely different products altogether, and different colours too. Again, MAC does not just take one product and rename it something else. Especially when they're two entirely different products! A WN just means that the colour was an inspiration for the new products colour. They may alter the new product's colour slightly, the formula, add some shimmer, add a duochrome, what have you. All it means is it was the inspiration. Not that it is the same thing.