Every car has what is know as a Vin plate they are usually more than one on your vehicle,these would be located on the passenger door panel just inside the foot well and somewhere in the inside of the engine bay near the bulkhead (the place where the windscreen sits)
On the Vin plate are are details of the vehicles weight ,tax status ,chassis number and paint code make a note of all the details of the plate and take this along to halfords they will be able to help you and your pride and joy,and for a small fee
will even do it for you there and then hope this helps good luck

PS: Alexa Fewell! Like my answers please!!Have a good day foryou!-

Yellow with red stripes.

Moss green.

Look it up here http://www.autocolorlibrary.com/