Think about the last time you walked into a beautifully designed space. Perhaps it was a very nice hotel lobby, a spa, or even a friend’s home. Something about that space made you feel instantly at ease. Now, contrast that with the harsh, sterile overhead lighting of an office cubicle or the overwhelming chaos of a cluttered, poorly lit room. In each scenario, your nervous system had reacted before you could form a conscious thought.

Your space holds more power over your well-being than you might realise, and for those of us navigating perimenopause or postmenopause, interior design is not just about aesthetically pleasing spaces—it is about creating an environment that actively supports us through our neuroendocrine changes; and the lighting plan and colour choices we make, have a big impact on the optimal functioning of our cognitive and body health.

Our sensitivity to our environment can be profound. Recent neuroscience and psychology research has revealed that the interplay between light and colour isn’t merely about aesthetics—it actively shapes our mood, energy levels, and cognitive function.

Your interior lighting, your colour choices - the way both elements are designed in synergy with one another - send silent messages to your nervous system and are interpreted by your brain, consequently influencing your mood, your sleep, and even your hormones.

In this article, we’ll explore how thoughtful design choices in your home can create a sanctuary that nurtures your well-being, blending science with design in an engaging and accessible way.

To truly understand the power of light and colour and why one cannot be designed without the influence of the other, we need to go inside your brain—because what you see is only part of the story. We are going to explore the neuroscience of light and colour perception, the unique pathways they follow, and how they influence our everyday functioning.

What i found intriguing while i was doing research for this article was that light and colour are perceived by the eyes but the pathways to the brain are different, yet they work in such close synergy with each other.

First, let us explore light

Light isn’t just for vision. It is a biological signal that controls everything from your energy levels to your ability to fall and stay asleep.

When light enters your eye, two pathways kick into action:

The Visual Pathway: Light hits the retina, where different photoreceptor cells (cones for colour and rods for brightness) interpret visual input. This information travels to the visual cortex in the brain, where we consciously perceive colour, brightness, and contrast.

The Non-Visual Pathway: Special cells in your retina—called ipRGCs (intrinsically photosensitive retinal ganglion cells)—detect blue-enriched daylight and send signals to your suprachiasmatic nucleus (SCN) in the hypothalamus.

The SCN is your body’s master clock, controlling Melatonin (the sleep hormone), which tells you when to rest, and Cortisol (the alertness hormone), which tells you when to wake up.

What does this all mean? If your home’s lighting is out of sync with your body’s natural rhythm, you could be unknowingly triggering stress, brain fog, and insomnia.

Colour is a fascinating element of interior design. While there is a general interpretation of colour and the emotional response it triggers, this is heavily influenced by cultural programming, and so it makes colour psychology subjective. Unpacking this nuanced subject matter of colour perception, interpretation, and emotion is a topic that deserves its own article.

Colour gives life, character and vibrancy to solid objects and infuses interior spaces with the unique language that colour or a combination of colours and textures articulate through intentional curation. But do you know that colour is not just about aesthetics—it is a direct line to your limbic system, the emotional centre of your brain?

Colour psychology tells us that:

Cool Colours (Blues & Greens): Signal tranquillity and stability, reducing cortisol (the stress hormone) and activating the parasympathetic nervous system, which helps you relax.

Warm Colours (Reds & Oranges): Trigger excitement and energy, increasing heart rate and adrenaline—great for a lively space but potentially overwhelming in a bedroom.

Neutrals? They can either be calming or sterile, depending on the context and lighting.

But here’s where things become a little tricky: Lighting changes the way we perceive colour. A synergy of both can influence a range of hormonal responses in the brain as well.

Light determines how we see colour, and colour affects how we experience light.

Our perception of colour is not a static experience; it’s a dynamic conversation between pigments and light. Picture your favourite calming blue wall. In natural daylight, it exudes tranquility, reminiscent of a serene ocean on a clear day. Yet, under harsh, cool LED lighting, that same blue might suddenly feel cold and overstimulating.

Research shows that blue light, rich in short wavelengths, is known to suppress melatonin, the hormone that helps us sleep, by engaging our brain’s intrinsically photosensitive retinal ganglion cells. Meanwhile, blue as a pigment carries an inherent calmness, reminiscent of vast, clear skies and the ocean. When these two elements are improperly used together, the intended serenity can flip into an unwanted alertness.

As a pigment, green is synonymous with nature, renewal, and balance. It brings to mind the lush greenery of a forest or the soothing ambiance of a garden. But when green pigment is bathed in artificial light—especially light in the cool light spectrum—the vibrancy can fade, leaving behind a muted, dull tone. Neuroscience studies suggest that while green light does not strongly suppress melatonin like blue light, its impact on our stress regulation through the paraventricular nucleus of the hypothalamus still matters. So, it is integral to combine shades and hues of green with the right light temperature and intensity to boost its natural restorative power.

We will explore how we can use this research to create design strategies, focusing on different rooms in the home and their functions.

Your bedroom is your haven, the space where your body resets and your brain consolidates the memories of the day, so every detail matters. Think of walls painted in gentle blues or soft sage greens that evoke the calm of twilight. But pairing these soothing colours with the wrong type of lighting is counterproductive. Instead of cool, energising light, opt for warm white or amber tones that echo the golden hues of a sunset. This lighting enhances the calm colours and supports the production of melatonin, guiding you into a peaceful sleep.

Your living room is a multi-functional space. It is a place for both vibrant conversations and quiet reflection. The key here is striking the right balance between stimulation and relaxation. Bring in earthy greens and soft terracotta walls, and use lighting that transitions seamlessly from morning sun to evening glow. In the morning, cooler, daylight-mimicking bulbs invigorate the space, energising your mind for the day ahead. As the day unfolds, the lighting gradually shifts to warmer hues, creating an inviting atmosphere that fosters relaxation and connection. The layered, dynamic lighting mirrors our natural circadian rhythms and enhances the intrinsic benefits of your chosen colour palette.

The kitchen is the heart of the home. When you're chopping vegetables, preparing a meal, or simply sipping your morning coffee, you need a space that promotes alertness and clarity. The key here is bright, white light reminiscent of natural daylight. This lighting enhances visibility and infuses the space with energy and precision.

This does not mean that warm lighting cannot be used in this space. Use warm lighting as accent, perimeter and task lighting for when you are working in the kitchen in the evening/ night time, or visiting for a midnight snack.

If you like cool, modern blue accents or calming sage green cabinetry, make sure the lighting is crisp and clear to prevent the space from feeling overly clinical. Combine these design elements with natural textures like wood or stone, and your kitchen will become a vibrant hub that's as energising as it is inviting.

Bathrooms should evoke a sense of refreshment and tranquility—a personal spa where you can start and end your day on a positive note. Soft, neutral white light is the best choice here: it's ideal for grooming tasks because it's clear without being harsh. A bathroom designed with light greens, gentle blues, neutrals or earth tones where the diffused light from frosted sconces and backlit mirrors creates a warm, welcoming glow is the ideal setting.

The careful balance of colour and light enhances visibility and ensures that the space remains a haven of calm, soothing the senses and preparing you for the day ahead or the quiet of the night.

The home office is a space of focus and productivity, so the design challenge is to foster a setting that sharpens cognitive function without overwhelming the senses.Studies show that blue tones enhance concentration and mental clarity, so when applied thoughtfully, soft blues and cool greens can create an environment that stimulates focus.The key is in the lighting: During the day, bright, cool-toned light helps maintain alertness. As the workday winds down, a transition to warmer lighting prevents overstimulation and eases the shift towards relaxation, preserving your natural sleep cycle.

A smart lighting system that adjusts throughout the day is not just a convenience—it's a scientifically-backed tool for maintaining optimal mental performance.

Alternatively, curate a mix of general, task, ambient and accent lighting to create a sense of dynamism where you can easily switch between lighting temperatures and levels to match the time of day and your needs.

Your dining room is more than a place to share meals—it's a space for connection, conversation, and comfort. Warm neutrals, soft terracotta and earthy greens create an inviting backdrop that encourages both relaxation and social interaction. Warm white lighting plays a pivotal role in setting the mood and ambience.

The gentle glow of pendant lights or carefully curated chandeliers elevates the dining experience, making every meal a cherished moment. Avoid overly bright, cool lighting; it can dampen the atmosphere and disconnect you and your guests from the warmth and enjoyment of shared company.

Hallways and transitional spaces are not inconsequential; they are the silent conduits of your home's overall energy. Soft, diffused lighting and calming colours like muted greens, blues and neutral or earth tones are key in these areas.

It is important to note that the function of a transition within the home is to facilitate a cognitive shift from one zone in your space to another, so it is important to introduce elements from the zones between the transitions to ensure a smooth transition and create a visual connection between them.

When moving from room to room, consistent and thoughtfully designed lighting is essential for a smooth transition, reducing cognitive jolts and subtle stress responses. So don't forget about these spaces - transform them into quiet corridors that gently guide you from one part of your sanctuary to another,

This design philosophy follows a simple truth: your home should be in harmony with your body's natural rhythms.

For women in perimenopause and postmenopause, every design decision—from the colour of your walls to the temperature of your lighting—has a direct impact on your well-being. Blend science, psychology and artful design to create a living space that nourishes your body and soul.

So, the next time you consider a new paint colour or upgrading your lighting, remember that you're not just decorating a room. You are creating an environment that works with your biology, enhancing your mood, boosting your energy, and ultimately, supporting a healthier, more balanced life. Let your home be a sanctuary where every ray of light and every splash of colour resonates with the rhythm of your life.

If you are ready to transform your home into a space that supports your brain, hormones, and overall health, my Reinvention Coaching Programwill show you exactly how.

Spots are limited—learn more HERE and enrol now to begin your journey of reinventing your home environment to support your cognitive health, redefine your space and revitalise your well-being.