"Fortissimo in Plum" by Joen Wolfrom
 

 

 

  
   
  "Fortissimo in Plum" (60 by 36 inches, 1985) showcases another of Joen's innovations, the curves-on-the-whole technique. She chose colors that created illusions of transparency and luminosity, two principles discussed in The Magical Effects of Color. Photo by Ken Wagner.