Dopamine Designs for Happy, Feel-Good Spaces
Welcome to Rainbow Shaker!

Press and TV

Colour Your Home Happy™

Colourful hallway with yellow and coral walls, featuring a yellow dinosaur figurine wearing a small knit hat on a shelf, and Rainbow Shaker peeking through a white door.

The Course to create YOUR Happy Home

Ready to create a home that radiates happiness, energy and personality 🌈?

Colour Your Home Happy is a fun, interactive online course that helps you break free from design rules and embrace colour with confidence. Through dopamine décor, fearless styling, and hands-on creative exercises, you’ll learn how to transform your space into a bold, joyful reflection of YOU.

Woman holding a phone displaying a podcast with a colorful outfit in front of a wall sign that reads 'YASSS.'

The Podcast for Bold, Joyful Interiors

Tired of neutral, uninspiring interiors? So am I!

In the Colour Your Home Happy podcast, I help you gain the confidence to use colour fearlessly and design spaces full of joy, energy, and personality. From dopamine décor tips to expert interviews, this podcast will inspire you to create a home that makes you smile every day.

Services

Colourful dining room with a wooden table and mixed chairs. An eclectic gallery wall features colourful framed art on a geometric painted wall.

Looking to transform your space into something truly extraordinary? Whether it’s a joyful home that reflects your personality or a commercial space that wows your clients, I’ll guide you every step of the way.

Dopamine kitchen with wooden countertop, colourful mugs, basketball planter upcycle, decorative painted circles on the wall, a small vase with flowers, and pastries on a glass stand.

A styled space can speak louder than words! Whether it’s for a branding campaign, magazine feature, or real estate listing, I’ll style your space to create unforgettable visuals that capture attention and tell your story.

Justine Guillermou sitting in a colourful room setup for the video recording of her Colour Your Home Happy course. The décor includes vibrant patterns on the ceiling and furniture, with a mix of books and green plants visible in the background.

Ready to design a set that tells a story and leaves a lasting impression? From TV and film sets to movie clips, I specialise in creating immersive environments that are as functional as they are stunning.

Hi! I'm Justine, Your vibrant designer…

I create bold, joyful interiors that turn spaces into vibrant reflections of personality and energy. As the creative mind behind Rainbow Shaker, I specialise in dopamine décor and fearless design, helping people and brands craft spaces that don’t just look amazing but make them feel amazing too ✨.

🚀 From rocket science to riotous colour, I swapped engineering for interiors, blending structured problem-solving with a fearless love of design. You might have seen me on Channel 4’s The Big Interiors Battle, or heard me on my podcast, where I help you ditch beige, trust your instincts, and create a home as bold as you are.

Justine Guillermou in vibrant, colourful outfits pose in a stylish, eclectic room with brick walls, plants, and colourful décor. One wears a pink and yellow floral dress, and the other wears a pink velvet suit.

FREE QUIZ

Colourful Memory Palette

Need help finding inspiration for your space? Your home should be a reflection of your unique experiences and memories. Take the quiz to take a trip around the world and explore this special connection!