Transparent Texture Representative Image

This is something that has plagued me for a while, mostly like a bug trying to land on your face at first it doesn’t really bother you, then it starts bothering you, and then it bothers you a lot. Anyways anyone know of the setting to make the representative images show what they actually look like instead of this weird smear thing that transparent PNGS and such do? Those white ones, for instance, I cannot tell what they are at a glance it is quite annoying. I assume since it is such a simple thing there is an easy fix and I am missing something. Albeit it is very possible this is just normal and I have to live in hades for the rest of my life.
(I put this here because I see no other category to put it.)