how can I change the selection color to transparent and only have an outline?
I try to change the color in General>appearance>selection color and set value A to 0, but nothing effective.
Thanks!
To acheve what you want to do (like outliner that have pickups in game) you need to use a post processing effect that allow you to draw this lines: Unreal Engine 4 Tutorial - Basic Object Outline (Interaction) - YouTube here a quick tutorial how you can achive this effect.
About where he take the material is a Concent Example material already set up to download this assets if you dont know how to take them in your epic game launcher go in learn and under Engine Feature Samples the 6th is Content Examples where you found this PP material.