sorry if I jumped in where I shouldnt. Like Ladyalex I did not really know what I was answering,l except that your clue said route across the uk name include a colour - the Bluestone Heath Road is a Celtic or Roman road which runs the length of the Lincolnshire Wolds: I was thinking on the lines of Ermine Street, Watling Street etc which are Roman roads which cross the country but dont have a colour in their name. sorry if its caused any confusion. As the theme is colours, it just seemed a good answer at the time.