Every pigment in a fruit or vegetable is doing something. This is a calm, cheerful blog about what those colours mean — and how to eat a genuinely varied diet without turning dinner into a spreadsheet.
You don't need to memorise nutrients. You need to notice colours — and then reach for the ones you've been skipping.
Rainbow Plate is a plain-English blog about the pigments that give fruits and vegetables their colour. Those pigments aren't just decoration: they're families of plant compounds, and eating across the whole range is one of the easiest habits in nutrition to picture and to build.
There's nothing to buy here, no cleanses, and no promises about curing anything. Just what each colour family is, what it tends to do, the everyday foods that carry it, and a gentle way to get more variety onto your plate.
Six colour families, one simple habit. Here's what the pigments actually are, why variety beats chasing any single "superfood", and how to start noticing the gaps on your own plate.
Read the guide →Each one takes a single colour family — or the whole idea — and walks through what the pigment is, what it does, and the ordinary foods that carry it.
The whole idea in one read: six families, why variety wins, and how to spot the colours you keep missing.
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Tomatoes, watermelon, strawberries and red peppers — the pigments behind the colour, and how to get the most from them.
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Carrots, sweet potato and pumpkin owe their glow to a family your body can turn into vitamin A.
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The colour of leaves comes with a crowd — lutein, folate, vitamin K and more travelling alongside.
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Blueberries, red cabbage and aubergine share a striking pigment — and some genuinely interesting research.
Read →The colour guide ties every family together and gives you a one-week way to eat more of the spectrum.
Start here →A pigment map of the produce aisle. Each tile is one colour family — the compound behind the colour, roughly what it's known for, and the everyday foods that carry it. Aim to touch every tile across a week.
Red produce leans on lycopene (in tomatoes and watermelon) and, in berries, the same anthocyanins you'll meet in the purple tile. Cooked tomatoes with a little oil are one of the friendliest ways to take lycopene on board.
Beta-carotene gives carrots and squash their glow, and your body converts some of it to vitamin A.
Yellow peppers, corn and citrus carry pigments like lutein and zeaxanthin alongside vitamin C.
Green is chlorophyll, but leafy greens rarely arrive alone — folate, vitamin K, lutein and fibre tend to come along for the ride. This is the family most of us find easiest to eat more of.
Truly blue food is uncommon; blueberries lead a short, lovely list of deep-hued fruit.
Aubergine, red cabbage and purple grapes share the pigment that keeps popping up in studies.
Garlic, onion, cauliflower and mushrooms look plain but carry their own compounds — a reminder that "eat the rainbow" quietly includes the colours that aren't showy.
The point of "eat the rainbow" isn't to hit a colour at every meal. It's to keep the range wide over a week, so no whole family goes missing.
A small game that works: before you shop, glance at your last few days. Which colours are thin? Buy one thing from each gap — a red, a purple, something leafy — and you've done the work without measuring a thing.
No. The habit works best as a weekly idea, not a daily checklist. Some days lean green, others red — that's fine. What you're avoiding is a whole colour family quietly dropping off your plate for weeks at a time. Range over a week beats a perfect rainbow at every meal.
It's a useful shortcut, not a guarantee. A brightly coloured sweet or a dyed drink isn't what "eat the rainbow" means — the colours that count are the natural pigments in whole fruits and vegetables. Used that way, colour variety is a simple stand-in for eating a wide range of plants, which is a habit worth having.
It depends on the pigment. Some, like the lycopene in tomatoes, actually become easier to absorb when cooked with a little fat. Others, like vitamin C in a pepper, fade with long heat. There's no single rule — which is a good argument for eating produce in a mix of ways: some raw, some cooked, some blended.
For most people, whole foods are the better source. Pigments in a carrot or a handful of berries arrive alongside fibre, water and a mix of other compounds that a single-ingredient capsule can't reproduce. Supplements have their place for specific needs, but they're not a shortcut around eating actual plants.
No. Rainbow Plate is general nutrition information written for curiosity and everyday cooking. If you have a health condition, take medication that interacts with certain foods, or are planning a big dietary change, talk to a doctor or a registered dietitian first.