1. An apparatus for determining an attribute of an article, comprising: a light source that illuminates the article; at least one detector having at least one row of cells with at least one filtering color applied to the cells, wherein each row has at least one sensor cell, the at least one sensor cell having an additional filtering color applied to the at least one sensor cell in addition to the at least one filtering color, and wherein the cells and the at least one sensor cell output color values detected from light reflected from the article; and a controller that determines at least one attribute of the article from the color values of the cells and the at least one sensor cell.