Hello Mr. Ozkir,
welcome to the Greek aeromodelling forum.
There is not much activity regarding Greek aviation history here, but it happens I have an interest in it, so I think I can help you, even a little...
You have certainly picked an interesting old aircraft out of the Greek fleet, of which there very few pictures. (I have seen only four...)
As it happens, I have a copy of one, which shows one of the few 504k which flew in Greek colors after W.W.1.
The picture is taken close to Dekelia airport, near Athens, in 1920, following a forced lianding. The plane belongs to the Naval Aviation Service (Naftiki Aeroporiki Ypiresia) and was used for training purposes (naturally).
Regarding colors, roundel and rudder are light blue-white, and the plane could be doped linen. The silver color for trainers was introduced a little later, I think.
Not much to go with maybe, but at least something to start with... I hope it helps.
Now for something on my turn, if you can help. Do you know of any existing pictures of Turkish Bleriot monoplanes used in the first Balkan wars?
Good to have you here,
Regards,
George Kandylakis
PS. What kind of model are you thinking of ? Needless to say, we would like to see pictures if you proceed...