Buster Caldwell: Crafting Colour and Character from Ponsonby

For interior designer Buster Caldwell, colour is never just decoration. It’s a design tool, one capable of shaping mood, identity and atmosphere within a space. That philosophy has become a defining feature of Caldwell’s work through his Auckland-based design studio, Wonder Group, now proudly located in Ponsonby. 

In 2026, Caldwell joins the judging panel for the prestigious Dulux Colour Awards, a milestone year for the programme. While the awards celebrate their 40th anniversary in Australia, they also mark 15 years of New Zealand participation, a moment that recognises the growing influence of local designers on the wider design landscape. 

For Caldwell, being invited to judge the awards is both an honour and an opportunity to champion thoughtful design. He sees colour as one of the most powerful tools available to designers, capable of moving beyond the visual to influence how a space feels and functions. 

“Colour stirs feeling and attitude within a space,” Caldwell says. “With the right hand, it moves beyond the visual and into something very special.” 

That belief sits at the heart of Wonder Group’s work. Founded after Caldwell moved to Auckland, the studio has built a reputation for its craft-based, reductive design approach across hospitality, retail and workplace interiors. Their projects are known for their clarity and narrative, often balancing bold painted surfaces with natural materials to create spaces that feel both expressive and grounded. 

Now operating from Ponsonby, the studio has quietly helped shape some of the neighbourhood’s most loved interiors. Among them are local favourites such as Duck Island and Città – spaces that combine strong identity with an understated confidence. 

For Caldwell, the path into design began far from the creative hubs of Auckland. Born in Whanganui, he spent his childhood moving between small rural towns around the central North Island, including Lake Taupō, before attending Hamilton Boys’ High School. 

Growing up in remote environments had a lasting influence on his design thinking. Resourcefulness and problem-solving were part of daily life on the farm, long before he realised design could become a career. 

“I’ve always been drawn to how things work,” Caldwell says. “Growing up on a remote farm meant fixing and making things with whatever materials were on hand. That curiosity eventually became a discipline.” 

He later studied industrial design at Massey University in Wellington, where workshop-based learning reinforced the importance of making and material experimentation in the design process. 

That maker-led mindset continues to inform Wonder Group’s philosophy today. Rather than chasing trends, Caldwell focuses on restraint, craft and context, often drawing inspiration from the natural world. 

Colour, in particular, is treated as part of a broader spatial logic rather than aesthetic “icing”. For Caldwell, the best colour strategies are deliberate and purposeful, helping to define thresholds, signal intent and reinforce atmosphere. 

As a judge for the 2026 Dulux Colour Awards, that is exactly what he’ll be looking for: projects where colour is integral to the design rather than applied at the end. 

“I’ll be looking for entries where colour is a reasoned decision,” he says. “The strongest projects have clarity on why the scheme works and how it supports the needs of the space.” 

From rural beginnings to shaping some of Ponsonby’s most recognisable interiors, Caldwell’s journey reflects a distinctly New Zealand approach to design, grounded in craft, place and thoughtful simplicity. And as the Dulux Colour Awards celebrate a milestone year, his perspective offers a reminder that colour, when used with intent, can transform the everyday spaces where we live, work and gather.