Development of design elements for DIY chain Max Bahr, Toom, Hellweg, Praktiker under the umbrella of J.W. Ostendorf, a German producer of home decoration colours. The customer experience in DIY shops has become more and more creative. Customers want to experiment and design their own individual space. We developed elements that reflect this trend, such as the "light box" which projects colours to help the customer decide which colours to use on their walls, knowing that colours influence feelings and emotions.