Your best bet is to go to your local Brown Brothers Paint supplier and look through their colour books ie Pantone,British std colours or even car colour box's. Most branches carry a spectrometer which reads the colour then formulates it into a colour, very handy if you have something to match. If they can formulate a colour for you they can supply a paint called Selemix which can be a 2K Uhs based paint or even stove enamel.