Margot van Lieshout curled up reading a colour-coded WSET study syllabus in a mustard-yellow armchair beside a shelf of wine books.

Colour Coding Your Notes

Green for viticulture, pink for winemaking, orange for the law. Here is how to build a five-colour study key that actually earns its keep.

My D3 syllabus looks like a paint set went off across it, and that is entirely the point. Green for viticulture, blue for geography and climate, pink for winemaking, yellow for grape variety and wine style, orange for the trends and the law. Every page runs on the same five-colour key, and after enough passes my brain stopped reading the words and started reading the colours. That is what good colour coding does: it turns a wall of text into a map your eye can navigate in a second. It will not do the learning for you, but sitting alongside real notetaking it makes revision faster, sharper and a lot less miserable. Here is how to build a colour system that pulls its weight, instead of a highlighter massacre that just leaves your notes looking pretty.

What Colour Coding Actually Does

Colour coding means giving specific colours to specific kinds of information across your study materials. The goal is a visual hierarchy: a page where the key points, the relationships and the categories jump out on sight, because each one is tagged to a colour your brain already recognises. It leans on visual memory and association, which is why it works so well for some learners. It suits some heads more than others, depending on how your memory likes to hold onto things, but when it fits, it fits hard. In practice it is simple: you keep your colour key beside you as you read, and you highlight each concept in the colour you have assigned to it.

Why Highlighting Earns Its Place

Done properly, highlighting is not busywork. It changes how fast and how well you can work with a page of notes. Here is what it actually buys you:

  • Visual organisation. Colour lets you spot and sort information at a glance, so when you need a specific topic you go straight to it instead of hunting line by line.
  • Emphasis on the key points. Marking the concepts that matter pulls your attention onto the critical material and away from the filler, so you always know what to look at first.
  • Better comprehension. The visual cues show connections and hierarchies you would miss in plain text, which makes the harder topics easier to hold together in your head.
  • Faster review. When you come back to a colour-coded page, the colours do the finding for you, so revision takes a fraction of the time.
  • Retrieval practice. The act of colour coding is itself a round of studying: it makes you engage with the material and decide what matters, and that decision is what reinforces the memory.

How to Colour Code So It Actually Works

The benefits are real, but only if you run the system with a bit of discipline. Here is how to make colour coding work as hard as you do.

1. Create a key. Before you highlight a single line, decide what each colour means and write it down. For example, you might decide orange stands for the main ideas and pink for the supporting detail. My own D3 key runs green for viticulture, blue for geography and climate, pink for winemaking, yellow for grape variety and wine style, and orange for trends and wine law. Put that key on a post-it, stick it to the front of your syllabus, and you never have to guess mid-session.

A Wine with Margot colour-key card showing the word orange struck through an orange highlight for main ideas and pink highlight marking supporting details.
My colour key in action: orange for the main ideas, pink for the supporting detail.

2. Value Consistency. Once the key is set, use the same colours everywhere, across your syllabus and your own notes both. That consistency is the whole mechanism: it is how your brain learns to tie a colour to a topic, until eventually the colour alone tells you what you are looking at. Switch your colours halfway through and you throw that association away, and the system loses its point.

3. Avoid over-highlighting. Colour everything and you have coloured nothing. Overloading the page, or reaching for too many colours, drowns the signal and makes it impossible to tell the essential from the merely present. Cap yourself at five colours with clear, fixed meanings, and highlight sparingly. The whole power of the technique is contrast, and contrast dies the moment the entire page glows.

Margot's D3 study colour key: green for viticulture, blue for geography and climate, pink for winemaking, yellow for grape variety and wine style, orange for trends and wine law.
My actual D3 study key: five colours, one meaning each, never changed.

4. Prioritise Key Information. Only mark what earns it: the concepts central to understanding a topic, or the material likely to come up in the exam. There is no sense highlighting what you already know cold. I used to do exactly that, colouring in facts I had down pat because they still felt important, and all it did was clutter the page. Save the colour for what you keep forgetting.

5. Use symbols or annotations. Colour is not your only signal. A few symbols in the margin add a second layer of meaning on top of the highlighting. My own set: an orange exclamation mark for something I need to read up on, a question mark for a topic I still have a question about, an asterisk for a fact that could win extra credit in an exam answer, and a small green triangle for anything I should turn into a visual process, a mind map, a winemaking flow, an appellation hierarchy. The symbol tells me at a glance what to do with the line I have highlighted.

Margot's margin symbol key: orange exclamation mark to read up, question mark for a query, asterisk for exam-credit points, green triangle to turn into a visual process such as a mind map.
The symbol layer: a mark in the margin for what to read up on, what to question, what wins credit, and what to turn into a diagram.

6. Practice Active Retention and Engagement. Highlight after you have finished your notes, never while you are still taking them. It is tempting to colour as you go during a lecture or a webinar, but that splits your attention and usually gets it wrong. Colour coding done as a separate, uninterrupted pass forces you to actually weigh the significance of each thing you mark, which makes it a second round of studying in its own right. That deliberate engagement is where the retention comes from.

7. Review regularly. Go back over your colour-coded pages at intervals so the associations stay fresh. The colours are a memory cue, and like any cue they work best when you keep reactivating them, rather than colouring once and never looking again.

8. Adapt to your preferences. Bend the system to how you actually learn. I like to use the same highlighter colours right through my syllabus and match them to same-coloured post-its, so any extra question I scribble slots straight into the code. Yours should fit your own head, not mine. It is a tool built to serve you, so shape it that way.

9. Use colour coding both ways. Run the same key across two things: your reading materials and the summary or notes you write afterwards. Highlight the source in your colours, then highlight your own summary in the very same code, and the system reinforces the same associations from both directions at once.

One last thing worth saying plainly: colour coding supports your studying, it does not replace it. It is no substitute for proper notetaking or for actually understanding the material, and it works best sitting alongside active recall, summarising and concept mapping, not instead of them. Build a five-colour key, hold it steady, mark only what you keep forgetting, and let the colours turn a daunting syllabus into something your eye can read in a glance. That is the moment a page full of colour stops being decoration and starts doing real work.

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Does colour coding your notes actually help you study?

Yes, when it is used as a deliberate system rather than random highlighting. Assigning a fixed colour to each type of information builds a visual hierarchy that lets your eye find key points and categories fast, and the act of deciding what to mark is itself a round of active studying. It works best alongside notetaking, active recall and summarising, not as a replacement for them.

How many colours should you use when colour coding notes?

Cap it at five colours, each with a clear, fixed meaning. Past five, the contrast that makes the system work collapses and the page turns back into undifferentiated noise. A few well-chosen colours beat a full rainbow every time.

Should you highlight while taking notes or afterwards?

Afterwards, as a separate uninterrupted pass. Highlighting while you take notes splits your attention and you tend to mark the wrong things. Doing it as a second pass forces you to weigh what actually matters, which turns colour coding into a second round of studying.

What should you colour code in your study notes?

Only the material you do not already know: the concepts central to a topic and anything likely to appear in the exam. Highlighting facts you have down cold just clutters the page and drowns the signal. Save the colour for the gaps you keep forgetting.

What is the best colour coding system for studying?

The best system is a consistent one you build yourself and never change mid-syllabus. Assign one colour per category, keep the key on a post-it in front of you, and use the same colours across both your reading and your own summaries so the associations reinforce from both directions.

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Margot van Lieshout
Written by

Margot van Lieshout DipWSET FWS RV

Wine marketeer, sales expert with over 20 years in the trade, public speaker and international wine judge. Thousands of wines scored from Steiermark to Ningxia, and a trade she knows from the inside out. Wine with Margot is where she helps wine brands tell the stories that sell them.

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