The Yellow glaze is the one glaze that was in production throughout the life of vintage Fiesta. Turquoise, while not strictly an original color (having been introduced about a year into Fiesta's production) was otherwise also in continuous production until the end of the original vintage era in 1969. Red, while an original color at the line's introduction, was removed from the market before 1944 (see below). Although it was brought back into production from 1959 to 1969, this was after most of the unusual serving pieces had long been discontinued. Red pieces also usually command a premium price in the secondary market, both for its vibrancy in the mix of colors and for its scarcity due to limited years of production. While many collectors love all the colors, some only want those of the "Original 6" or "Fifties Colors".