Change border-left color for linked comments to different background-color
Now that we're using border-left
more and more (comment by OP, comment by yourself, exemplary comment, ...) I think making a linked comment (like: https://tildes.net/~test/6hv#comment-1x63) shouldn't change the border-left color but should change the background-color instead, similar to how GitLab does it (middle comment is linked):