March 15

How (and why) to build rainbow LEGO sets



From using up your LEGO collection to making your builds stand out, there are so many reasons to colour outside the lines when it comes to building. Here is your beginner guide to building rainbow LEGO sets.

Have you seen our rainbow R2-D2? It’s on our BrickResales team shirts, our website, and even on display in our Coopers Plains showroom – safe to say, we’re pretty proud of it here at BrickResales.

The idea to make a large-scale R2-D2 came to our founder Judy about eight years ago. At the time, she desperately wanted the R2-D2 UCS set, but its $350 price tag (which has significantly increased since then) meant she couldn’t afford it.

“I decided to use parts from my existing stash, in keeping with my philosophy (turned business model!) of reusing LEGO parts rather than always rushing out to buy the shiniest, newest sets,” says Judy. “As I started building it and sharing my progress, it became so popular, I knew I had to use it for my BrickResales branding!”

Dedicating an hour or two each day to her new project (time permitting), plus time spent searching for all 2,500 parts, meant that it took Judy several weeks to complete her rainbow R2-D2.

A massive effort, but it was certainly worth it.

And, as it turns out, Judy isn’t the first builder to give LEGO instructions a rainbow touch. There are plenty of people all over the world trying the technique themselves, and for a number of different reasons.

Some say it allows them to build fast and build more, while others love that it means they don’t have to meticulously sort their collections. Building with a mixture of colours also inspires imagination – when you are less worried about tracking down the ‘right’ colour, you can spend more time thinking about how to better your build. And, as Judy discovered, this technique can make LEGO building more accessible to those who can’t afford to buy whole sets.

“It’s all about making do with what you have,” says Judy. “But also, in saying that, it’s a good idea to have more pieces than you actually need for any given set, to avoid placing the same colours next to each other – as much as 20 to 30% more, if you can.” 


  1. Try to avoid using browns, greys, tan and black, as these colours can really dull your bright rainbow effect. Of course, some parts are not produced in bright colours, so using one of these hues every now and then is okay.
  2. Avoid using the same colours next to each other where you can. Using lots of white is a great way to make the other colours really stand out, and it’s a good idea to use a few of your favourite printed parts to add interest, too.
  3. Relax and have fun with it! Choose your favourite set and simply have a go – it might take a bit of changing around to get the ‘perfect’ configuration but remember: the whole point is for it to look uniquely yours!

Have we inspired you to build a rainbow version of your favourite LEGO set? We would love to see the result – be sure to tag us at @brickresales when you share your photos on Facebook and Instagram, or send them directly to us over email!


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