Abstract: This invention relates to apparatus for applying color to the bore of perforations in various materials and more particularly to a device for coloring the buckle holes in belts usually made of leather or similar material. More particularly the device comprises a driven spindle rotatably mounted in a base having one or more recesses or grooves for holding a coloring wax which is applied to the bore of an object such as a strip of leather to which the coloring material is applied so that the bore of the hole, which may be in a belt, has the same appearance as the dye applied to the exterior of the belt. A variety of wax indentations is described as well as the use of a multiple spindle device.