Especially if you like to use rattle-cans - and especially if, like me, you've been limited to Testors rattlecans for years - you know that, for each warship build, the search for the "perfect gray" is a major pursuit.
Only recently have I discovered a whole raft of new flat-finish grays - some of them Testors colors I'd never seen before, but many of them also new Tamiya spraypaints - virtually doubling the palette of grays available in this form:
Here I've tried to arrange (and number) them in order of decreasing brightness - lower reflectivity - although the appearance is subjective, due to color-sensitivity of the viewer's eye, the camera taking the picture(s) and the lighting conditions at the time. The front row are all called "gray", of one variant or another - however note some of them appear just as bluish or greenish as the three behind, explicitly called "blue" or "green" - per the following:
1: Testors
Camouflage Gray (1933)
2: Testors
Flat Gull Gray (1930)
3: Testors
Flat Dark Aircraft Gray (1226)
4: Tamiya
Light Blue (Luftwaffe) (AS-5)
5: Tamiya
Light Gray (IJN) (AS-2)
6: Tamiya
Light Ghost Gray (AS-26)
7: Tamiya
Gray Green (IJN) (AS-29)
8: Testors
Light Sea Gray (1926)
9: Tamiya
Dark Ghost Gray (AS-25)
10: Tamiya
Medium Sea Gray (RAF) (AS-11)
11: Tamiya
Neutral Gray (USAAF) (AS-7)
12: Testors
Navy Aggressor Gray (1994)
13: Testors
Intermediate Blue (1920)
14: Testors
Euro I Gray (1988)
15: Testors
Gunship Gray (1923)
16: Testors
Panzer Gray (1950)
The advent of these lighter- and bluish grays, in particular, are very welcome - and this is far from the entire selection, at least in terms of the Tamiya (blue-) grays.
The Tamiyas are impervious to mineral spirits - typical paint thinners - which will dissolve (especially fresh) Testors paints, enabling a wide range of Testors-over-Tamiya wash effects. Both types are highly soluble (though the two can't be mixed, AFAIK) in lacquer thinner.
Such Tamiya and Testors paints have different strengths and capabilities: the former goes on very fine and thin, and dries very quickly, while the latter both sticks (at least, under masking tape) and can fill surface defects much better. The very near- if not identical color-matches between some of them, open up possibilities for using both types on different parts of the same build, where advantageous.
Meanwhile, the combination of strongly-adhering Testors and finer-coating Tamiya, should make for ideal latex-chipping of the latter, over a base coat of the former.
All in all, a great expansion of the "tool set"!
Cheers,
-Matty