Sand Castles are made from the top layers of sand, sometimes light, sometimes a bit darker
I have added a huge selection of these tonals, all done in my Octopus Base, which is an 8 ply, super springy base! It works so well for colourwork in sweaters, and shows stitch definition amazingly well! This DK sits on the edge of Sport/DK with it's yardage, so could be used for either!
100% sw merino
I also have a few left in Sock Yarn!
80% sw BFL/20% nylon