I have take some time to search forum and thats what i find:
Linen color for Voss F.I?
Also to note what Dan San said:
Taz:
These two Fokker V. machines are covered with bleached linen (white) and when doped becomes quite translucent. After doping and varishing, it takes on a yellowish-white color. The unbleached linen is its natural color and is light greyish-beige, after doping and varnishing it is a tan color. The Fokker E types were covered with unbleached linen. Fok.DR.I 144/17 and 425/17 were covered with unbleached linen fabric.
And the tan color is what I have used here. In the attach is teh snap shoot from the preserved fabric from Dr.I. It is not photographed at perfect condition and sample is too old.
What is one more problem is the color of the landing gear struts. they are too much dirt so i can get are they light blue base or green. Any idea?
Cheers