Pixel art workflow for unity?

Hey guys, I was looking into making pixel art for a unity game and would like to know does anyone have a workflow for pixel art? I tried to import pixel art and attach it to something like a plan or cube but the art turns out to be dark because of needed lights, but if im not mistaken pixel art does not need lights.

 

Unless you had self illuminating shaders, you'll need lights.
I know this isn't a workflow, however, this has high praise in the asset store.
https://www.assetstore.unity3d.com/#/content/908