ainawgsd:Penciled/PartridgePenciling is a pattern of two to four black lines following the contour o
ainawgsd:Penciled/PartridgePenciling is a pattern of two to four black lines following the contour of the feathers on either a gold or silver (white) base. The dark brahma variety is silver penciled. In most breeds, gold penciled is called partridge. Adding blue or lavender dilution genes dilutes the black to a shade of grey. Dilution of gold in addition to the lavender gene results in a color commonly referred to as Isabel/Isabella -- source link