brightener
n.— «There have been newspaper stories of people who are trying to hoard large quantities of the old Coke. The stories have been played as “brighteners,’ cute features that illustrate how wacky folks can be. But every indication is that many, many Coke drinkers are deadly serious about trying to stash away bottles and cans of the old Coke so they will have it available to them.» —“New Coke Should Be ‘canned’” by Bob Green Dalla Morning News (11A) June 19, 1985. (source: Double-Tongued Dictionary)