Issues with exporting to Unity 2019 from Blender 2.8

So I’m having quite a bit of trouble getting Blender to export textures into Unity 2019. I’ve created a really basic model and added color to it,

But when I move to Unity, the textures are all basic white and and don’t seem to be assigned properly.

Is there something I’m doing wrong Blender side? I’ve been googling for quite a while and can’t seem to discover a fix. I’m new here so I can’t post multiple images in my post which I’m sure will make this hard to diagnose.

Any help would be appreciated. Can do this from Maya just fine but doesn’t work from Blender.