The phrase "dark overtones" refers to a feeling or suggestion of something negative, disturbing, or sinister in a situation, story, or atmosphere. It implies that there is an underlying sense of darkness or sadness present. Full definition
Stikman's Threaded piece is there to spice up the overall impression with dark overtones also conveyed in The End Times piece made by Darkcloud. (widewalls.ch)
Except The Medallion is a mostly unfunny film, not only because it has quite a bit of dark overtones, but when it does go for laughs, which is more frequent than it should, it's so trite in its delivery that more groans are elicited than chuckles by a significant margin. (qwipster.net)
Afterlife with Archie was one of the most recent success stories, it had very dark overtones and capitalized on our recent obsession with zombies. (goodereader.com)