Color drop down menu

[AnotherNoOne]

Hi, i was wondering how exactly those fancy drop down- to select color menus of some shapes work. I get the point with the lists and how to make them, but how can i set the color of the shape depending on a special value?

Lets assume i have a drop down menu:

Video
Audio
Network

and depending on what is selected i want the color of the shape to be red, green or blue.

How exactly would this work?
I thought about using IF(), but i dont know how to get from a string to a boolean value.

Or is there like an incredibly easy way i´m just too blind to see?

[metuemre]

You can get the index of selected item in dropdown menu with LookUp function. Check the formulas in attached sample shape.

[AnotherNoOne]

Perfect, Thank you very much!