We can represent this image as \(3\times 3\) matrix where each entry is a colour. Colours can be represented in many ways: HEX, RGB, HSL, CYMK. We'll represent a colour by a 3D vector of RGB values.

Want to add a bit of visual flair to 3D printed parts that goes maybe a little more than skin-deep? That’s exactly what [volzo] was after, which led him to create a Python script capable of ...