Description of our paint chips and process
Because oil-based paints darken and yellow over time, these processes must first be reversed prior to matching the
original. This is accomplished through the use of processes developed for and used in paint analysis on historic buildings.
Following reversal of the aging process, all color matching and mixing is undertaken by Dunn-Edward Paint Company,
under the supervision of Snyder & Short Enterprises. Dunn-Edwards technicians first place the original sample in a spectrophotometer which produces a suggested mix
ratio. The colors are then mixed by computer-controlled measuring devices, and the initial tint ratio is carefully noted. After mixing, each color is brushed out, allowed
to fully dry, and then compared to the original sample under controlled lighting conditions. Because the spectrophotometer rarely achieves a perfect match, the color is
then carefully adjusted by the addition of minute amounts of tinting material and the mixing, brush-out, and drying process repeated until a perfect match is obtained.
Dunn-Edwards maintains a record of each S&S color and the tinting ratios necessary to produce it so that each subsequent batch of paint will match the original. For
security purposes, Snyder & Short also maintains both a computerized and hard copy backup of the mixing formulae.
The paints are applied to sheets of self-adhesive labels, which are in turn affixed to pre-printed archival-quality
cardstock pages. Each set is enclosed in a white envelope and includes a brief explanation sheet. All colors were matched to eliminate metamerism, and will therefore
match the original in any light.