I bought a tonne of roads and rivers from an eBay seller called Fat Frank. They are great but I didn't realise they would come already painted and flocked with static grass.
This week during my Tier 3 time I was able to begin deflocking the edges, repainting them in my standard table colour and then added my flock to match my Cigar Box mat. I also paint and flock further in from the edge to reduce the width of the actual path.
On the right is the standard road section and on the left if my reflocked version.