Ok - time to post the Golden West fade test. Results are mixed, but mostly positive. I started out with an Atlas FGE car from my latest Chuck-pak. Here's a proto-photo for reference:http://www.railcarphotos.com/PhotoDetails.php?PhotoID=28905
and the model out of the box:
I applied a few simple upgrades first: painted the roof blue as per the proto photos I could find, BLMA coupler platforms, MT/1037 trucks (with coupler box painted blue...) and FVM wheels.
Now, I believe
the transparent oxide paints act according to subtractive color theory which means for example, that a transparent yellow layer would preferentially absorb or filter out blue, and so forth. Here is a nice brief reference on the topic:http://hyperphysics.phy-astr.gsu.edu/hbase/vision/filter.html#c1
So I started out with the yellow tinted brew noted previously and applied several coats. I wasn't completely satisfied with the results (not enough fade) so I switched to an orange tinted brew and applied several more coats (all applied very lightly). Here is the result:
Note that the blue is quite faded, the red less so, and the yellow hardly at all - just what I wanted! I have a sense that if I tried to go much farther with this one that it would start to look like an over-spray (I haven't tried it), but I think it works well to this extent.
I finished it off with some grime washes and Bragdon powders:
I think I overdid the grime a bit and will probably do the next one as more of a pure fade with very light grime. Curiously, the prototype boxes have almost no rust. This blue must be an excellent rust inhibitor while having lousy UV tolerance.
Ok, one more. I really like the Evans double-plug cars: CHTT prototypehttp://www.rrpicturearchives.net/showPicture.aspx?id=225330
This was mostly a test of paint-outs. After a few coats of white/flat to seal the graf decals, I masked the paint-outs and proceeded to fully fade the remainder. Now I'm running out of decent graffiti decals...
Thanks for looking - comments always welcome,
P.S. Now I'm getting up the nerve to tackle my GT auto-rack... ;D