This example displays a long, alphabetically sorted list of brush names in a scrolling text interface, with a large color swatch and hexadecimal color readout updating in real time. It uses a custom rendering loop with Canvas API drawing operations to generate a procedural color gradient based on mouse position. The code references `requestAnimationFrame` and Canvas `fillRect` to continuously repaint the background, while the list itself is rendered as plain HTML text. No external visualization libraries are used; the interaction is limited to mouse movement affecting the displayed color.