Yes, the "culinary arts" involve the nuances of gustatory taste, but visual sensibilities also come into play, especially for some of the most demanding connoisseurs: children.
Picky as can be, parents know anything to make the food go down smoother is worth it. On the other hand, some just love to "jazz it up." Take for example Kai Wilden, the former graphic designer who tricks out his kid's lunchbox with cartoon motifs (pictured here).
To check out a range of his creations, go see this slideshow. Of course, many people are into these fancy box lunches that derive from the Japanese "bento box" tradition - check out a Flickr stream
of them here.