Quality Street fans may notice something different in their chocolate collection this Christmas.
But there's no need to panic - all the chocolates will remain exactly the same - but due to a shortage in foil, two will be wrapped differently.
A limited run of tubs, pouches and cartons will include the hazelnut noiisete, called Green Triangle, wrapped in a shade of gold instead of green and the Orange Crunch in dark bronze foil instead of the usual orange.
The packs were being produced at Nestlé's Halifax factory, the home of Quality Street, when it became clear that stocks of green and orange foil would not cover a planned production run that took place last week.
Nestle occasionally substitute Quality Street chocolate for another chocolate when a particular sweet can't be manufactured for some reason.
However, on this occasion, it was felt the change of coloured foil was a better solution to make sure as many people as possible get the full Quality Street selection this Christmas.
Quality Street's Senior Brand Manager, Jemma Handley, said: "I promise this isn't a publicity stunt. We've not added full size chocolate bars to the tin or removed the coconut flavour from a handful of tubs.
"We simply didn't have enough of the right coloured foil to cover the production run of the two sweets in question and, rather than leave them out of the selection altogether, we decided to use different colours for a very limited period"
"We are fairly sure this is the first time this has happened so anybody who finds a green triangle or an orange crunch in a different coloured foil will have something of rarity on their hands.
"I am pleased to say that it's the same delicious hazelnut and orange sweets inside the wrappers, regardless of their colour."
Production at the factory is now back to normal with Green Triangle and Orange Crunch restored to their traditional colour of foils, while packs with the substitute foil wrappers will land on shelves at retailers across the UK and Ireland over the next few weeks.
There will be no visible difference on the Quality Street packaging because there is no change to the sweets themselves.
It's not the only packaging change that people will find in their Quality Street this Christmas.
Earlier this year Nestlé announced that cellulose wrappers used on other sweets in the Quality Street assortment are being gradually replaced with a new paper wrap.
The move will remove two billion pieces of packaging from the brand's supply chain.
Meanwhile, it was announced Bounty chocolates will be removed from some Celebrations tubs in a Christmas trial.
It followed a study which found 20% of consumers saw Bounty as their least favourite chocolate in the collection.
