Trouble is, the grey tends to photo poorly – typically, it seemed to better the moment I try to do a comparison, because of course it did.
(Of course, there is a chance that merely having something of a different colour in the viewfinder may have altered the way the camera took the photo, given it runs on smart settings. Which I use it on because all attempts to fiddle with it have resulted in worse pictures as a close-up detail mode appears to be the one function this camera doesn't have…)
But in the CVR(T) [1]pictures above, usually with the pale grey – like for Shapeways (old) WSF – I have to futz with the contrast to make the details out (which makes things like the striations stand out way more).
You can see the effect on the middle tank – you can't actually make out some of the surface details close-in.
The older grey we used was darker and the ideal material, but we can't get that colour before. Getting a neutral colour is actually proving to be suprisingly difficult, actually.
When the light is better tomorrow (it was getting late when I took those in terms of daylight), I'll have to have another go, and switch the order around and see if that make any difference, photo-wise.
[1]And I apologise for mucking up the parenthese – I'm still a bit off-colour with something I'm fighting off at the moment and not processing at 100%…!