Unity not selected gameobject show this collider wire frame
this project only show wire frame function
Example:
step 1 attach "Draw(...)Collider" to has "(...)Collider" gameobject, ... is Box,Mesh,Sphere,Capsule or attach "DrawCharacterController" to Has CharacterController Component gameobject,
step 2 selected other gameobject in hierarchy,
step 3 this collider wire frame don't disappear.
the end for Example
Support Collider: Box Collider, Mesh Collider, Sphere Collider, Capsule Collider, Character Controller,
The End.