I am attempting to convert a particle system into a mesh system

I am trying to convert a particle system into a mesh. I have successfully done so, however there seems to be a couple of issues.

The mesh is black and will not change its colors, ever.

When exporting said mesh and putting into unity it comes up as nothing, even though I do have a UV map (given the default mesh came out without any edges for the map, so i had to make them).

Inside blender the grass looks beautiful, high resolution even. But it seems impossible to get it to import into unity? And once i seperate it from the ORiginal mesh as its own mesh it loses all of its brilliance?