Possible Clues:

• Matter thrown up at union conference — only half start talking it over
• Ticker-tape parade feature
• Ceremony at first, then often it’s thrown
• Could this be picked up better around church when the marriage is over as it leaves a paper trail?
• Scraps in a shower after match
• What offers coverage for new union members
• Paper associated with a union?
• A sprinkle of colour on match day?
• To infect (anag)
• Bits of paper scattered at festive occasions