Hi Michayos, First I totally agree that the 59 Catalina is a very nice looking car. However, I am positive that Sunrise Coral or any of the other Spring 58 Pontiac colors were never used on production 1959 Pontiacs. I have an extensive collection of 59 Pontiac memorabilia including a set of all fifteen 2"x6" factory paint panels from Dupont. Also the 59 dealer showroom album and all sales literature only reference the fifteen known colors. In addition I have one of the backlight boxes that the salesman used to show the various body and top color combinations. The colors were changed by turning separate wheels to change the top or body color. Again only the fifteen published 59 Pontiac colors are displayed. The spring 58 colors on the paint chip chart were just that, 58 Pontiac colors....period. Also I have a complete set of 59 Pontiac AMT promo models in all fifteen colors and have never seen any 59 dealer promo models in any other colors. I have no idea what dealer promo models in other colors you are talking about? With all due respect, if you can provide any historical documentation that shows any colors other that the fifteen in the showroom album and elsewhere, I would really love to see it.