This could be an easy win, because besides offering something "trendy", we would also have an example in core of how subtheming works.
It may be so that this could even be as simple as implementing Color module support for Seven, and then making it a color scheme that people can select and tweak.
Related: https://github.com/backdrop/backdrop-issues/issues/4778
GitHub Issue #:
3990
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Worth mentioning as it was in zulip chat by @yorkshirepudding I just tested and the two work together without issue as long as you don't use the "Exclude comments from Content...
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There is also Node Comments Search - this searches the node and all comments (default search is node and first page of comments) as part of the content search. Izzy's module above is a separate...
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I have created a new module comment_search
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