I would go for Humbrol modelling paint. Cheap as chips and you can mix & match.

http://www.ebay.co.uk/itm/HUMBROL-Enamel...=item4d2d335705

Midnight blue gloss looks quite close.


DaveW
'05 Red Roadster S1
'16 Yellow (Not the only) Narrow AR GDI Plus 4