How Mondrian can save your wallet. And save you,too.Black Friday. Do you need anything? You (probably) dont.What if we could hack Amazon's homepage for a day and transform it into a place of harmony and spirituality instead of a loud market square youll throw your moneyat?A few years ago, an artist named Piet Mondrian proposed that underneath the texture of nature, there is a foundational structure of rectangles, lines, and primary colorsa place of beauty whose rhythm brings us closer to thetruth.Thats something, right?Piet Mondrian, Tableau I, 1921, oil on canvas, 96,5 x 60,5 cm, 2013 Mondrian. Ludwig Museum, Cologne. Picture taken byme.What is that other thing that is built with lines and rectangles? Theweb.Rectangles filled with text and images, rectangles with rounded corners we want people to click on (aka buttons).What if the truth has always been lying underneath all our interfaces?I was in front of a Mondrian in Cologne last week. I finally got it. The truth lies underneath all web pages, including Amazons homepage.Lets see if I can redesign Amazons homepage to demonstrate mypoint.First, get a home page screenshot and draw the basic structure.BTW Amazon, Pump up the joy?Second, lets start adding color, bringing in some grey (very present in Mondrians artworks), and rotating the UI in portrait (vertical) mode to move away from the usual browser view for asec.It's pretty ugly still, but well getthere.Now, Im merging the rectangles and starting to add some rhythm. The lines and the rectangles must open up to extend our UI to a potentially unlimited, infinitespace.How well will the Amazon homepage overlap with the underlying structure we identify? I got something likethis:Only some adjustments are left to ensure the content gently fits our spiritual grid. There itis:Of course, some functionalities will be missing. The search bar will not have space, so itll have to go, and most noticeably, all the Shop now calls to action will begone.With a browser frame, you can now enjoy the beauty of a shop where nothing can be shopped. This is the underlying foundation beneath all ourUIs.That was Mondrians Black Fridaymiracle.If Friday is blackadd red, yellow, and blue was originally published in UX Collective on Medium, where people are continuing the conversation by highlighting and responding to this story.