This'll become second nature in no time, I promise.
I have no trouble identifying on from off, perhaps the color scheme you are using is coloring them too closely? @mitchell's suggestion should work in this case.
This is the way it worked in past versions too. I'm not a big fan of it either and it's something that is likely to change.
It also overlapped your work and had to be moved around to be able to work with it. Sometimes people lost it altogether because it wasnt pinned. There's pros and cons to the new implementation, but I honestly believe the pros outweigh the cons.