i have a tiffany box themed wedding cake and the bride gave me free will on the design...she did say she wanted the cake to look like stacked tiffany boxes. but when i look at some of the pics, sometimes the "blue" color looks like it has some green in it. i have never seen a "real" tiffany box, so i wouldn't know. but is the color a pale blue? or like a blue/green color?
Tiffany uses a blue-green colour for their product line, as in the pic below. I really, really don't think most brides realize that "Tiffany blue" isn't just a pale blue though. When I show my brides a ripped out magazine ad for Tiffany's, they are often very surprised of the shade.
There are so many interpretations of the colour though. Just Google images for "Tiffany blue". Look at all of these different shades!