These are dense areas of lace, used as a contrast to the ground. The German term is Vollwerk. There are different terms in English or French, depending on whether it is worked in cloth stitch or half stitch.
All solid areas using cloth stitch can be coloured, by making the worker pair a different colour. If the cloth stitch areas touch each other (for example, in a fan headside), then start the worker pair with the different colour. If the areas don't touch, then you will have to introduce the colour at the top of each shape and get rid of it at the bottom. You can replace one of the top passive pairs with a new coloured pair, tying off the old pair, and doing the same in reverse at the bottom. Or you can add a new coloured pair at the top, to be the workers, then tie it off at the bottom. This means that you have more passives than usual, but this doesn't matter!
© Jo Edkins 2020 - return to lace index