I got the picture above from the Facebook page of Cedar Crest farm and feed in Ohio. http://www.facebook.com/cedarcrestfarmohio/
They don't mention them on their main web page. I also noticed Graceful chickens no longer has their main web page, maybe they stopped raising chickens or something...
You can get fibromelanosis, the blue egg gene, and a straight comb from crosses between Silverudd's Blue (AKA blue Isbar) and the Svart Hona. There is a breeder who sells them as "Swedish Blue Hens". I have also seen them called "Swedish Bluebars".
I think it makes an attractive mix, though...