I have always loved the dark website layouts when designed properly. These often influence other areas of content within the page as it all must conform to a darker color scheme. Websites who go after this technique are often following a related niche which fits the design style. But don't feel limited based on your current website!
Personally any website design could be updated to include a more darker-themed layout. I want to use this showcase as an inspiration for web designers looking into dark color schemes. Check out the content on each page which includes text, images, and possibly dynamic widgets. There is a lot to consider within this collection, but I hope these examples may provide a spark of creative energy to web designers everywhere.