The stripes on my coachroof were past polishing (too many years in the sun). After trying every way I could to get the colour back, I decided there was no option but a re-spray.
So after a few goes with different colours, I eventually found the perfect colour match.
So, the dark blue that they used from about 2003 onwards, is Ford Balliol Blue. You can get it from Halfords. I didn’t use a primer, simply masked-up and sprayed it directly onto the striped.
Looks like new again now.