The aircraft had the orange balls applied on wings and fuselage.
It was painted, just like the Fokker D.III, in a turquoise blueish colour (called "turkoois blauw" in Dutch), with a dark brownish varnish all over it.
Compare your model with photo's with the original (Dutch) airplane.

 

SchemeColour nameFS numberHumbrolXtraColorWEM
Standard #1Turquoise blue ~5299   X615 AC D 05
[LVA Light Blue]

Check www.paint4models.com for an extensive conversion table with lots of colour and paint systems.

 

Below the paint scheme of the AEG C.IV. Note that the colours and letter font used for this drawing may not be correct, but just reflect as good as possible the ones used on the real aircraft.

Standard scheme AEG C.IV.
Standard scheme AEG C.IV.
The aircraft was Fokker built and painted in the blueish colour used by Fokker at that time.