This commit mainly changes the color definitions. Mostly, those changes are semantically equally, but there are a few changes that occurred to align the color scheme within the app.
We introduce the font-display property. See https://developer.chrome.com/docs/lighthouse/performance/font-display/
Using a two-step process is recommended: 332e25186a/docs/v6_upgrade.md
332e25186a/docs/v6_upgrade.md