23 or 26 colors.

A Rowan kit sold by Woman and Home magazine in 1986 or after. According to this article, A Profile of Rowan Yarns by Linda Pratt from Interweave (direct PDF), this pattern “became the impetus for the publication of Fassett’s first book, Glorious Knits: Thirty Designs for Sweaters, Dresses, Vests and Shawls (New York: Clarkson Potter, 1985).”