Luke,

I have seen the runaway advertisement for the Highland servant from Fredericksburg, Virginia, with his tartan sleeveless jacket lined with green shaloon. I have previously come across information (can't find it now) that Highland tartan was purchased for export to the colonies as it was considered a rough cloth that was fit for slaves and servants. I presume this trade really took off after The Forty-Five and the establishment of firms like Wilson's & Sons, and lasted into the 19th century.