Steps to reproduce the issue

Articles > Versions button > Compare

Version

6.1

Expected result

No matter whether you are in Dark Mode or Light Mode, the Compare popup of Versioning should have a good color contrast

Actual result

With dark mode, the changes are

• white on light green
• white on light red
  and is not readable (color contrast)

See screenshots

What device were you using? (eg, phone, laptop)

desktop

What web browser were you using? (eg, Chrome, Safari)

Firefox (latest)

Assistive Technology?

No response

Additional Comments

Maybe contrast-color() could make sense to solve this kind of issues.
https://developer.mozilla.org/en-US/docs/Web/CSS/Reference/Values/color_value/contrast-color

I noticed this issue on Versions > Compare and I don't think right now of other places using that red/green background, but maybe there are other places to fix in the backend

When editing from the front-end, the issue does not arise because front-end edition does not follow the light/dark mode setting of the backend. I also checked the case of a front-end Template which is in dark mode, but even in that case the Modal Window for Versions Compare has white background