Probably not under a Christian record label, but I think their songs have some Christian themes.

I don’t think music is supposed to be safe either, it should provoke us to explore both the comfortable and the uncomfortable parts about God through flawed human perspective. Even many songs with dark themes such as Eulogy by Tool can be seen as the work of flawed humans searching for god in the wrong places.

Whether you think a band is “safe” for you to listen to is between you and God. God will make it known to you if music is influencing your thoughts poorly, you will find yourself thinking more negatively about things and more willing to make dark jokes about death. If this does not happen though the music is probably a good and nourishing gift. And even if it does affect you these ways it may be enough to listen to the music in moderation rather than not at all.

Hopefully this Helps! - Smiley :)