Another way: 1: put a fading part 2: make so the fading part is invisible and false cancolide 3: put a button with the same size as the fading part; 3 studs up the fading part. 4: Make so the button shows up (Parts > visible) 5. Click on the edit button at the button behavior and click the fading part. 6. Press confirm at the button's behavior. 7. Enjoy!
