Hi,
It seems that most folks use decals:
http://modelingmadness.com/reviews/w1/cleaveralbd5.htm
And this guy painted them. This link may be more useful because it covers a 1/72 scale plane:
http://www.rollmodels.net/nreviews/airplanes/72Albatros/johannes.htm
And here's one more:
http://www.ipmsstockholm.org/magazine/2003/03/stuff_eng_tech_wood_grain.htm
Regards,