A red SVG canvas displays a blank space where a face could be drawn, but no visual elements are rendered. The example sets the background color using D3.js v6, specifically calling `d3.select('svg').style('background-color','red')` on an SVG sized 1000x400. The code includes an inline script and loads D3 from a CDN, with a linked stylesheet controlling the page layout. The visualization demonstrates basic SVG selection and styling through D3’s selection API.