How to prevent Unreal from changing disabled button's child opacity

Hi everyone,

I want to implement simple tabs and so far everything works perfectly when I navigate between tabs.

To indicate the current tab, I am disabling the current tab’s button. I also changed the disabled button’s style to look brighter instead of dimmer default look.

But the button’s child image it seems to get some level of opacity and looks dimmer. And I cannot find how to prevent that.