dark mode bug in /examples/sidebars/

[endcoreAK]

Prerequisites

• I have searched for duplicate or closed issues
• I have validated any HTML to avoid common problems
• I have read the contributing guidelines

Describe the issue

if you switch to dark mode on the example page, the background on sidebar 2 +3 is lighter than the others, also the blue on the active pills is different than the icons (3rd sidebar) and last but not least I noticed that under account (4th sidebar) the links are dark.

Reduced test cases

https://getbootstrap.com/docs/5.3/examples/sidebars/

What operating system(s) are you seeing the problem on?

macOS

What browser(s) are you seeing the problem on?

No response

What version of Bootstrap are you using?

5.3.0-alpha3

[julien-deramond]

Thanks for submitting this issue @endcoreAK.
Dark links are definitely an issue to fix.
Regarding the difference between the background and active colors, I might need some guidance about the expected rendering by @mdo in dark mode. I can still propose a draft PR to fix everything with my own vision of it, but I'm no designer.

[mdo]

Only plan is to fix link color. Rest of the changes are good to keep—we change link color in dark mode, but we don't (yet) change the main theme colors.