### Description single-select list visually communicate selected state with color alone. It should be visually communicated with more than just color. https://www.w3.org/TR/UNDERSTANDING-WCAG20/visual-audio-contrast-without-color.html ### Reproduction 1. open https://material2-dev.web.app/list 2. Navigate to "Single Selection list" demo 3. Under "Favorite Grocery", click "Oranges" ### Expected Behavior selected state of "Oranges" is visually communicated with more than color alone ### Actual Behavior color of "Oranges" changes to indicate selected state <img width="351" alt="image" src="https://user-images.githubusercontent.com/7720245/199113523-cb7df5f6-f094-44ac-988c-c26d89c18a02.png">