Hallo One_Helcat,
The Spitfire Mk.VIII, IX, XIV interior was painted with Grey Green colour, ES 34226, Humbrol78, Gunze H70, Xtracolor X10.
The rest of colours you can find in the table below.
The standard camo scheme for Spitfire Mk.XIV fighters was painted with Dark Green FS34095 and Ocean Grey FS36187 on upper and side surfaces.Medium Sea Grey FS36270 on undersides.Additional colours on aircraft for quick identification were Sky type S FS34583- spinners and stripes on fuselages directly in front of the tail section.Yellow FS33655 - the leading edges of wings following from the outer gun to the light on the tip of the wing.
Shortly before the D-day started all RAF planes that were going to take part in Overlord operation, had gotten the B&W ( three white and two black ) 18 inches stripes around wings and rear part of fuselages ( in front of the Sky stripe) Later these stripes were removed gradually,firstly from upper surfaces of wings and fuselages and then from undersides.On January the Third of 1945 on all aircraft of the Second TAF in Europe all elements of quick ID including the Sky type S stripe on fuselages were removed.From the date spinners could be painted with any colour including personal ones.On March the Eighth 1945 it was ordered that some of fighter planes could be without the camouflage ( simple bare metal- aluminium) The order was for NA P-51 Mustang MK.III and IV, Supermarine Spitfire.
If you look around the section you can find some additional infos.If not feel free to ask,please.
my best,