That's not entirely true, Lliikkiittaa. There's also the Celtic Knot Border rom Purika, and 15 different wigs/hairstyles from the Cutting Crew in Denim. ^^ Also the Princess Xin miniset currently in the Treasure Trove has a Maroon/Denim/Gray/Ocher set. ^^
There aren't too many items right now, but I bet it will be more popular as time goes on! Just like the spike in popularity of Blue Iris a few years back, and the current crazy with Aqua. Soft, deep blues seem to be very popular on this site, no matter what the shade!