These are work slacks or pants that differ in tone from the commonly accepted color at the workplace, which is usually khaki. In most cases, these slacks are a different tone, but not a completely different color. In a workplace where khaki is the color of choice, many of those above entry-level will wear different tones of khaki ranging from yellow-brown to dark brown.
In a workplace with a strict dress code, there needs to be a way to differentiate the lowly employees from those slightly higher on the management food chain. A different shade of pants is used to broadcast one's higher position within the company.
"Maybe we can ask him for help?"
"No, don't ask him!"
"Don't you see? He's wearing coordinator pants."