I have been looking for a template for blogger that I can use in my blogger supreme blog these past few days and I have found several dark but awesome black blogger templates. Here are some of the free to use black blogger beta templates that I have found online. Some of these blogger xml templates may not be all dark or black but headers and sidebars are in dark colors. Check out these awesome blogger template designs that you can use in your blogspot blogs:
Photoblog from btemplates.com
Night Club from btemplates.com
Just remember not to remove the footer links from these free blogger templates as this is your way of thanking the blog designers for giving away their templates for free :-) These blogger blogskins templates are free and great looking but if you can't find a template that is just right for your site, you may consider looking for some blog designers (which I did) or find sites that sell one of a kind web templates that might match your preferences. Some sites also offer paid memberships that will allow registered users to access and download unlimited templates in their sites.