Changing BG-Color to (CMS Collection List) BG-Color

Hello Webflow community, I am struggling with Collection List Items.

I want an click based animation on the background color of an item/div from white to the CMS powered/defined Bg-Color.

The static nature of the (CMS-Color-Field ) Colors doesnt allow me that.

Thats the reason I am looking for external code. The solutions i found and made by my self doesnt really work.

Here is my read-only link: