YML text diffs are unreadable

[HexedHero]

When looking at the diff between a text change in YML, the dark red and dark green along with the grey text makes it unreadable.

• Browser: Chrome Version 99.0.4844.51 (Official Build) (64-bit)
• Operating System: Windows 10
• Link to page with the issue: Any YML
• Screenshot:

This theme:

Default GitHub's Dark Mode: