Can you skin grid.selection buttons differently?

Hi there. I wanted to find out whether you could do the above as I have a selection grid, but when can't figure out how to skin differently as they at present inherent the same GUI.skin.

If you can't, is there a way to replicate a grid selection with buttons? I'm thinking you can. but not sure how you would code this.

Any help would be great on this matter.

Rich