Increasingly vocal crisp brand Golden Wonder has launched a cheeky campaign for cheese & onion crisps to be sold in green packs and salt & vinegar in blue.

The Tayto-owned brand - which has recently been wooing vegetarians after Walkers added real meat to its meat-flavoured crisps - is urging suppliers to adopt the traditional colours for the two crisp flavours. Walkers and many own-label ranges sell cheese & onion in blue and salt & vinegar in green packs.

Activity will include an ‘amnesty’ in major cities encouraging consumers to switch one packet of ‘wrongly’ coloured crisps for two bags of Golden Wonder. Tayto is also calling on consumers to sign its petition.

“Cheese & onion comes out of a green bag - it’s a fact of life, it’s just they way things should be,” said marketing director Scott Guthrie. “When we talk to consumers, this is the most emotive topic.”

Golden Wonder sales rose 47.2% last year to £11.9m [Nielsen 52w/e 13 October 2013]. Walkers is worth around £500m.