Yellow Pages: Yellow Chocolate

A phone directory brand sells a real chocolate bar, and the public lines up to buy it. That is the core twist behind Yellow Pages New Zealand’s “Yellow Chocolate”.

When a “job to be done” becomes a product on a shelf

The premise is simple and weird enough to travel. A regular New Zealander, Josh Winger, is tasked with creating, marketing, and distributing a chocolate bar that “tastes like the colour yellow”, using only businesses he can source via Yellow Pages across print, online, and mobile.

Here, a “job to be done” means the practical outcome people need help achieving, not the channel they use to achieve it.

The campaign is described as starting with a call for entries and then turning Josh’s progress into episodic content that pulls people into the build, not just the reveal.

How it works as an integrated proof, not a stunt

The mechanism is a live product demonstration disguised as entertainment. The brand does not claim usefulness. It forces a public, time-boxed build where every dependency is a Yellow Pages lookup, and the finished output is a retail product that carries the proof story with it.

That works because a public build turns a vague claim of usefulness into a visible chain of evidence people can watch, judge, and later buy.

At Cannes Lions 2010, the work is listed as winning a Gold Lion in Media, a Silver Lion in Titanium and Integrated, and a Bronze Lion in Cyber.

In mature categories where a brand needs to prove relevance to a search-first audience, turning the proof into something people can buy and share compresses “brand promise” into observable behavior.

Why “taste like yellow” sticks

An abstract brief invites participation. People argue about what “yellow” should taste like, contribute ideas, and then follow the build to see whose intuition survives contact with manufacturing, packaging, distribution, and retail reality.

Extractable takeaway: If your product is a utility people underestimate, stage a public build where your tool is the only allowed method. Then ship a tangible artifact that carries the proof narrative into everyday life.

What Yellow Pages is really buying

This is repositioning by demonstration. The chocolate bar is a carrier for a bigger reset: Yellow Pages is not an “old book your parents used”. It is framed as a modern system that can still help anyone get a job done, end to end, under real constraints.

The real question is whether a legacy utility can make usefulness feel current again without leaning on nostalgia or category habit.

What the results are described as

Results are reported as unusually strong for something that is, technically, a piece of marketing communications. The bar sold for $2. Some supermarkets reportedly sold out on launch day, and some bars were later traded online for up to $320. The campaign is described as building an online audience of more than 80,000, including around 16,000 Facebook fans and about 800 Twitter followers.

What to steal for your next “prove it” campaign

  • Make the constraint the headline. “Only use businesses found via X” is clearer than any brand manifesto.
  • Design for contribution. Pick a problem the audience can argue about in public, then let them feed the build.
  • Ship an artifact. A real product, sample, tool, or output beats a landing page when you need belief, not awareness.
  • Carry the proof inside the thing. Packaging and POS that explain “how it was made” extends the story past the content moment.

A few fast answers before you act

What is the Yellow Pages “Yellow Chocolate” campaign?

It is an integrated campaign where Yellow Pages challenges a participant to create and launch a chocolate bar that “tastes like yellow” using only Yellow Pages listings to source everything needed. The finished bar becomes the proof artifact.

Why does a physical chocolate bar matter here?

Because it turns an abstract brand claim into observable reality. People can buy the output, and the story of how it was made becomes a portable demonstration of the directory’s usefulness.

Which Cannes Lions awards is it listed as winning?

Cannes Lions listings for 2010 show the work winning a Gold Lion in Media, a Silver Lion in Titanium and Integrated, and a Bronze Lion in Cyber.

What outcomes are reported?

Reported outcomes include rapid sell-outs in some supermarkets, bars traded online for high prices, and sizeable social followings. Some recall and usage-lift figures are also reported, but vary by secondary retellings.

What is the transferable principle?

When you need to change perception of a legacy utility, do not argue. Force a public build where your tool is the only allowed method, then ship the proof as a tangible artifact.

Road Safety: The Bleeding Billboard

A roadside warning that reacts to rain

An impressive device was concocted by Colenso BBDO to demonstrate to drivers that vigilance is needed when it rains. The special billboards were installed on the roadsides in Papakura District, New Zealand.

When it began to rain these billboards started bleeding profusely.

How the device works as a message, not just a stunt

The mechanism is environmental trigger plus instant consequence. Rain does not just “set the scene”. It activates the medium, turning weather into the switch that makes the warning unavoidable.

In public-safety communication, linking a message to the exact moment of risk can outperform awareness-style reminders, because it removes the gap between knowing and doing.

The real question is whether you can make the risk cue appear at the exact moment a driver still has time to react.

Why it lands: it makes the danger feel present

The effect is deliberately uncomfortable. Blood signals harm, urgency, and the possibility of impact. It forces a driver to confront “what could happen” precisely when conditions are deteriorating.

Extractable takeaway: When a warning changes with conditions, the risk feels present, and instinctive self-correction becomes easier. “Rain changes everything. Adjust speed to conditions on the road”.

The business intent: behaviour change at the point of decision

This is less about recall and more about compliance. The goal is to interrupt automatic driving habits and create a micro-moment of self-correction: slow down because the road has changed. Here, “micro-moment” means a split-second decision point where a driver can adjust speed.

This is worth using when the behaviour change needs to happen in seconds, not after a campaign is remembered.

Stealable patterns for safety, infrastructure, and behaviour-change briefs

  • Trigger the message when the risk is real. Tie the communication to a condition the audience can see and feel.
  • Make the medium part of the proof. The environment becomes the “reason” the message is credible.
  • Choose a signal that reads instantly. Drivers have seconds, so the cue must be immediate and universal.
  • Design for instinct, not analysis. Behaviour change often happens through emotion and interruption, not persuasion.

A few fast answers before you act

What is the “bleeding billboard” campaign?

It is a road-safety outdoor installation where special billboards appear to bleed when it rains, warning drivers to adjust speed to conditions.

What is the core mechanism?

An environmental trigger plus instant consequence. Rain activates the medium, turning the weather into the switch that makes the warning unavoidable.

Why is the timing of the message so important here?

Because it collapses the distance between “knowing” and “doing”. The warning appears precisely when risk increases, at the point of decision.

Why use an uncomfortable visual like blood?

It reads instantly and signals harm without explanation. Drivers have seconds, so the cue must be immediate and universal.

What is the most transferable takeaway?

If you can trigger a behaviour-change message when the risk is real, the environment itself becomes the proof, and compliance becomes more likely than with generic reminders.