The color returned to the market in March 1959 when the Atomic Energy Commission granted Homer Laughlin a license to buy uranium oxide. They were replaced with forest green, rose, chartreuse, and gray, the so-called Fifties colors, since they remained in production until 1959. The eleventh and final color to be added was medium green, introduced in 1959. Medium green was relatively short-lived, as the entire Fiesta line was restyled in 1969, and Fiesta red was the only original color to remain in production. In collecting Fiesta, value depends on color as well as the type of item.
Medium green is the most highly prized, since it is the most difficult to find.
It is to Fiesta collectors what curly maple is to furniture buyers. Items in red, cobalt, and ivory also command attention. Certain individual pieces also generate considerable interest, such as the 10 inches and 12 inches flower vases, which were in production from mid-1936 until the fall of 1942. Other scarce items, such as the syrup and marmalade, are always popular. To further complicate matters, it depends on when an item was made as to what colors were available.