Ability to make your Own Custom Potion Effects

This is a Idea that i would really like to see in MCreator, The Ability to Make Custom Potion Effects (And i DONT mean multiple existing potion effects) i mean Actual Custom Potion Effects, with Custom Icon and everything.

you could make things happen with events when you drink the potion bottle. (Color Customizable Too) 

If this was added, i would be happy