Possible Clues:

• They bring word of the spoiled state the greens are in
• Misters, in short, are about to bring word of a hidden gene
• They bring word of the rubbish on the greens
• Errand runners
• Bringers of news in confused state with Communist switching sides
• Greens are in a mess and have sent for the postmen
• Their job is to carry on
• The word they bring emerges around North and South initially
• They come to tell you of the confusion the greens are in
• Perhaps there's a word for what they bring