As noted by Don, ALL of S-K's catalogs show black and white photograph images of the boxes
What about cover color? That generally shows corporate colors? Borders or title text?
My experience with corp marketing has always been they are pretty tight about a lot of things meeting "the corporate specs". VISA had possibly the tightest directives for color coordination I ever saw, and day one I was handed a "template power point" outlining every aspect that had to be followed religiously.
Ford has their "Ford Blue" oval, Channellock has trademarked CL blue. many, if not most companies are tight about such.
One company I contracted at was having a new sign put up at their HQ. The CEO drives up and sees the sign on a truck waiting for a crane. She stopped, introduced herself and told them to take the sign back and make it the correct color shade as it was off. Then damn near fired them on the spot when the foreman tried to convince her to accept it "as is" - It went back and a week later the new sign with the exact color shade was installed...
Even the last company I retired from, effectively a start up, had tight standards for what was acceptable for colors, fonts and anything that represented them. Colors changed at least 4 times in the 6 years I was there.
I would expect SK & Symington/Wayne to be equally tight.