Regarding the wing tips, the decal placement instructions show these as grey but I've found picture reference that shows them black, the only thing is the time frame as the decals are for an S-3 onboard the USS Kittyhawk on its Westpac cruise from April to June 1999 and the pictures I found are dated from September onward. Anyway they are staying black!
These two are up to the same stage in the weathering process;
The E-50 has had the MG mount on the engine deck painted in Dunkelgelb to add some contrast to the scheme. The Jagdtiger has had a pin-wash of dark brown applied and I will be doing the same on the E-50 later tonight.
As an experiment I tried the new acrylic Vallejo wash of dark brown on the engine deck of the Jagdtiger. I apply a coat of gloss varnish to tanks as without it pin washes just leave tide marks in my experience and it's something I would like to get away from if possible so after watching a Youtube vid about these washes I got some to play with.
The Jagdtiger was left unvarnished so I applied the wash, wetting the area with water and working in small areas as shown in the vid. This was the result;