Buttons and effects

[theredtitan]

Hello!

I would really apreciate any help with this.

I have a button, when you move your mouse over it the background changes with a transition from one colour to another and when you move the mouse away the background changes back. The problem is I don't have a clue how to make a backward transition, so the background doesn't change immediately but after a motion sequence, the same way it chenged when you move your mouse over the button. Please see the example.

Thanks for helping

Best wishes

theredtitan