The color is balance, the darker center in opposite of the lighter border. The same way the design is balance, a very busy Herati center and a pleasant border design with running water and trees.
The tribal weavers in Malayer were often Turkish, and they employed the Turkish knot, Gourde, to weave these creations. The Gourde is a symmetrical knot, as opposed to the asymmetrical knot of many traditionally Persian creations. Additionally, antique Malayer rugs regularly enjoy a low cut pile. Weavers trimmed the pile in order to enhance the appearance of the design.