I guess it's the blues in me or the love of the color...but that's where the name came from..and it's all about Soul! Making them while listening to Aretha helps of course! They were made as a pair and I will sell them together....actually, the first set was sold and went to Arkansas just last week, so I will make a new Set-of-Soul for you! Made of beautiful who knows what kind of blue, some yellow, and crystal clear stained glass and finished with a "pure of soul" white. They are 3x3x3" square and look great together! Give them to someone with soul!!...or at least is cool!