I decided to experiment further with my trial WWII U.S. painting technique, before listening to all of your advice and trying some technique completely new to me.
![Hellcats Hellcats](showcase/ww2landshowcase/2010/30205a.jpg)
So here are some 1:300 scale U.S. M18 Hellcats from WWII - another sympathy purchase from eBay, if I remember correctly, so I have no idea who the manufacturer is - which have again been painted with a black primer coat, Howard Hues Olive Drab, some highlights, and an ink wash (but not so strong this time).
![Hellcat (side) Hellcat (side)](showcase/ww2landshowcase/2010/30205b.jpg)
(I did, however, use a strong black ink wash in-between the running gear, as I prefer to give the illusion of shadows under the tank.)
![Hellcat (front) Hellcat (front)](showcase/ww2landshowcase/2010/30205c.jpg)
(Sometimes I put a black dot on the end of the gun barrel to make it look hollow, but I didn't this time...)
![Hellcat Hellcat](showcase/ww2landshowcase/2010/30205d.jpg)
The Hellcat is a tough vehicle to sculpt in this scale, because in real life you'd see the crew in the open-topped turret, and how do you represent that? So these vehicles look like empty tank destroyers...
![Hellcats Hellcats](showcase/ww2landshowcase/2010/30205e.jpg)
What do you think? Too dark? Too light? Wrong shade of green? Too much shadowing? Not enough highlighting?