Color your Unity Editor in a color, so you can see that you are in play mode and might loose the settings you do in the Inspector đ
This is a killer feature and I also agree on the positive effect to your hair…
Change Tint:
Edit > Preferences > Colors > Playmode tint
Original Post and nice Quote:
http://answers.unity3d.com/questions/22941/change-editor-colours-when-in-play-mode.html
Saved me from pulling all my hair out đ