Diff background color line numbers

[KN4CK3R]

#13922 removed the background color of the line numbers. Was this change intended? GitHub and GitLab use different colors for the line numbers too.

Screenshots

1.13:

1.14:

https://github.com/go-gitea/gitea/pull/13922/files#diff-109c70f0162741a5b3de595e88e23d39646b364750956dd6a99ab50b997869beL1610-L1629

[sharpSteff]

Imo it is quite hard to work without the background color of the lines.
This should be configurable...

[lunny]

@silverwind Can you explain some reason here or it's not a problem any more?

[silverwind]

It was semi-intentional but I agree we should add it back.

[ston1th]

@lunny @silverwind
May I kindly ask what the status of this issue is?

I really would like to have the old colors back or even better the colors github is using.
IMHO they are the best to look at.

[wxiaoguang]

These colors have been gone for long time ..... do we still need them?

[silverwind]

Hmm I do think they give a bit of distinction between what is line number and what isn't, so I still see them useful. But when we add them back, we also need to alter expander colors to match in shade. So likely this will be at minimum 3 new CSS vars.

[GiteaBot]

We close issues that need feedback from the author if there were no new comments for a month. 🍵

[silverwind]

Still something that should be done.