Looks like this again Some per-site-metas are orange - again? except it is the link styling and not the other parts of the page.
Sites I visited with the issue: ELL, EL&U, The Workplace.
Nope, it's not intentional. We updated the Stacks dependency but neglected to update the names of CSS variables referenced in the Stack Overflow codebase that had changed from
--theme-post-*. This resulted in incorrect theme colors being applied to post summaries in certain contexts. We've shipped a fix and this issue should be resolved now.