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I need help with blueprint menu to change mesh color

I’d like to create menu similar to archviz menus.
I attached an image what I want to create. Hope it’s readable.
I have a static mesh- a box, when I click on it, menu appears. Then I’d like to change its color or change it into another mesh- for example sphere.
I have created mesh and menu, but I don’t know how can I join the menu options with mesh to change color of that mesh. What kind of blueprint do that?
It’s probably simple to do, but I’m beginner user.
Thanks.