I was a fashion industry professional for 35 years. To some degree, black is the uniform of the fashion industry, so I based my wardrobe around black. Yes, the color specialist almost always wore black!
Black may not be as popular for decorating as for apparel, and therefore is not always considered when planning a quilt color scheme to coordinate with a room environment. In quilting, black is a wonderful ground color because it enables all other colors to pop due to the contrast. Historically, some beautiful Amish quilts featured black. Now, Modern and contemporary quilts can play off black equally well.
Here's my favorite quote about black, from Leatrice Eiseman, Color Expert at Pantone:
"Adding black to any color renders that color more powerful, creating an illusion of depth, weight, solidity, substance, and most often, more subtlety."
Mega Medallion top (partial view)
Commercial cotton fabrics
Loop in Motion, 2006, 60" x 60"
commercial cotton fabrics
hand and machine pieced, machine quilted
Note: if you use solid black as the background color as in Loop in Motion, I recommend black batting and a good lint roller!