Are you ready for some dark, rich colour? Then behold, this is Color Club Williamsburg!
Williamsburg is a blackened blue base with sapphire blue shimmer. Despite being really beautiful in the bottle, the downside of this polish is that it is not so well pigmented so I applied one coat of Williamsburg over dark blue OPI Incognito In Sausalito. That resulted in lovely deep and fully opaque colour. It applied well, dried fast and little bit gritty so I applied topcoat. So other than the pigmentation I didn't have any major problems with this polish :)