Unfortunately, its not that simple
The white is ordinary white in accordance with BS 4800 00E55
The green is definately a special mix which came from a sample many many years ago - the supplier cannot even give us the mix "recipe" as they are using a mix of their own colours. They also say that it does not match any other standard colour available
The black is Fords' Graphite Grey - be careful not to order anyone elses "Graphite Grey" as it will be grey - not black
If you really need to touch up the green paint, then you are going to have to get the nearest match (RAL 6010) and hope for the best, or pick your own colour and paint the whole lot again !
Alternatively, you can contact the paint suppliers:
Manor Coating Systems Ltd
Otley Road, Shipley,
West Yorkshire,
BD17 7DP
Tel: 01274 587351