I don't know why these 2 colours placed together are so good at attracting Plaice, but for some reason they do. Black and Green are the 2 top colours to put above your hooks. Thread 6 or 8 beads, alternatively, ie Black then Green, until you have a nice line of Black / Green beads, and you have a great attractor, not only for Plaice, but for all flatfish, Cod and Whiting