Hi Iris,
On the main website page there is a series of technical info pages that enable you to decode your own car
I have included a link to the decoder page below
http://fefcholden.org.au/techinfo/idinfo.htmlwhich when put into the decoder gives the following results
FC-225-8900-A Vehicle is an FC Special Sedan, the 8,900th manufactured in Adelaide, SA.
256-630 The Exterior Trim Code (256) describes this car as Two-Tone: Crystal Blue over Cambridge Blue.
The Interior Trim Code (630) refers to: Viscount Blue & Black.
256-2033 The Primary (bonnet, guards) colour is Cambridge Blue (in DUCO Lacquer)
253-2037 The secondary colour is Crystal Blue (in DUCO Lacquer)
Further information is available if you place in the chassis number and the engine number. This would give you an idea when the car was built.