Suggest HN: Use opacity for better downvoted-comment hiding
Adjusting the opacity property seems to affect both the font and the highlighted background, making it near impossible to read a comment set at, say, opacity 0.2. The only options you'd have to render the text legible would be either editing the css file, or copying/pasting the text elsewhere, both (I think) being too high-labor and making the effort just not worth it.
Edit: Tested a bit more, seems like opacity only seems to have a noticeable affect on legibility at around 0.4 and under. What about a combination of both systems whereby after hitting a certain threshold of negative karma, a greyed out comment is rendered more transparent? The idea is to make it difficult to read comments that are almost without a doubt inflammatory and uncivil. Often you'll see an endless stream of repetitive and replies made to a completely greyed out comment.