Like a lot of the new features/improvements in R24, dark mode is fantastic. But there are a few smaller issues to resolve within it now.
One of those issues is that not all colors are inverted in dark mode. Black and white are, but as soon as you adjust to 254, 254, 254, or 1,1,1, the colors don't invert. Some folks might be fine with this, but it causes a few issues for us. The primary one being that we stripe every other row in schedules with a very light gray. When switched to dark mode, the text in schedules inverts to white, so we are stuck with white text on very light gray every other line, which is illegible.
Rather forcing all colors to invert in dark mode, I suggest adding a checkbox Under Options->Colors to give users the option as to whether or not they want this.