Thanks everyone for all your replies! I do have the ball, and I can tell you that it does not change when it is dropped without any spin. I also tried rolling it down my stairs, and everytime it was it the air between stairs, it went into that midair stage, and once it hit a stair, it went back...
Hello,
I've come across this toy called a "Switch Pitch" designed by Chuck Hoberman. It's a ball that when tossed into the air (with some amount of rotation), inverts and changes colour. Made of plastic, it's connected with numerous sockets and plates. It's quite hard to describe with words...