Differentiate the colour of previously-visited hyperlinks

[kaycebasques]

Subject: Make visited links default color different

Feature or Bugfix

• Feature

Purpose

• Make it easier to tell which pages you have visited

Detail

• Updates the visited link color in all the themes to the HTML5 reference color per suggestion from @septatrix
• Fix make visited links default color different #1708

Relates

• make visited links default color different #1708
• #1708 Changed the visited link color for all themes except alabaster #9027

Screenshots

All are ordered before and then after.

agogo

basic

bizstyle

classic

default

epub

haiku

nature

nonav

pyramid

scrolls

sphinxdoc

traditional

[kaycebasques]

I can't tell if that CI / Docutils HEAD (pull_request) is related to my changes or is just flaky: https://github.com/sphinx-doc/sphinx/actions/runs/4855074164/jobs/8653200660?pr=11390

[webknjaz]

@kaycebasques that looks flaky. Try retriggering the CI by closing and reopening this PR...

[kaycebasques]

I'll try one more time but it seems like there may actually be something failing here...

[astrojuanlu]

Hey @AA-Turner @tk0miya, @kaycebasques pinged me in private about this PR. It fixes an 8 years old issue and looks good to be merged.

But more broadly, I'm wondering how you folks are doing in terms of workload, and whether you'd be open to have a conversation about governance. Looks like lots of folks from the Write the Docs community want to contribute to Sphinx and help, and it's not clear what's the best way to do so. I don't want to have that discussion here - we can open a separate issue about that.

[AA-Turner]

Thanks @kaycebasques!