You could do it this way: have 2 sprites, one red and one pink.
Pin one of the sprites to another.
Move the pink one, for example, to top ( z order).
Platform on jump
(Sub-event)Pink sprite opacity = o. ---> set opacity to 100 (I don'n now the formula .. Something with dt)
(Sub-event)Pink sprite opacity = 100 ---> set opacity to 0 (set opacity graduatly)
This is how I would do it, maybe someone from the forum will help you with the formula.