an additional problem with scanned images of color chips is that the color is often distorted by scanning
an additional problem with the Internet display of scanned images of color chips is that the color is often distorted by the limitations of color rendition over the Internet
an additional problem with the display of scanned images of color chips is the quality of the computer's video adapter and monitor, and the monitor's color-rendition adjustments
The color of the truck at oldno3fan's link looks more like Tartan Turquoise than Dawn Blue (on the page of 1957 chips posted above). Modern color codes should be available for Tartan Turquoise (PPG can match the old Ditzler code - it looks like 11807). No one really really knows what original Tartan Turquoise looked like, so, if you like it, go for it.
Tim
The Dupont Dulux code for Tartan Turquoise in 1957/58 is 93-75034
