What is the use of AccentColour in Screen Properties

[TheCodingBus]

Hello, Inventors,
What is the use of AccentColor in Screen Properties?
Thank You

[MohamedTamer]

Maybe you can read its documentation :

http://ai2.appinventor.mit.edu/reference/components/userinterface.html#Screen

[TIMAI2]

You will also notice a difference once you have compiled and installed your app (especially if you leave it at "Default")