Multicolor Cast-Ons
Contrasting-Color Cast-On with Corded or Braided Edge
The easiest way to create a contrasting-color edge is to tie two colors of yarn together in a slipknot and use them to do any kind of long-tail cast-on.
The yarn that goes over your thumb will be the color that creates the contrasting edge.
Two-Color Cast-On with Corded or Braided Edge
To make a two-color edge, two colors of yarn are used together in a Long-Tail Cast-On and the strands are rotated between each cast-on stitch.
Three-Color Cast-On with Corded or Braided Edge
To make a three-color edge, three colors of yarn are used together in a Long-Tail Cast-On and all three strands are rotated between each cast-on stitch.
Twined Cast-On for Two-Color Ribbing with Contrasting Edge
The twined cast-on sets you up for two-color ribbing and creates a contrasting edge in a third color.