what is color_swirl fr?

Color Swirl is a small visual experiment from gskinner lab that creates mesmerizing, swirling geometric animations in your browser. The result looks like a colorful, 3D spiral or tunnel effect drawn on screen, purely through layered shapes. The animation works by repeatedly drawing the same rectangle over and over without clearing the previous frame. Each rectangle is slightly rotated and scaled compared to the one before it, creating a smooth spiral motion. A blending technique called "multiply" is applied, which causes overlapping colors to darken and mix in visually interesting ways. A bit of randomness is added to the color and size of each shape, which gives the final result its depth and a pseudo-3D appearance. This project is primarily a creative coding demonstration rather than a tool meant for production use. Someone learning front-end development or generative art could study it to understand how simple techniques like shape layering, color blending, and motion can combine to create complex visuals. Designers or developers looking for lightweight background animations or inspiration for interactive web effects might also find it interesting. The README doesn't go into detail about setup or dependencies, and there is no documentation for customization. However, because the project is written in HTML and described as a "lab" experiment, you can view the live result directly in your browser to see exactly what it does without needing to install anything.