We more rarely see grey dials. Well, at first thought, because we have to remember some facts...

Indeed,Grey was used by Jaeger Lecoultre, in some of their white gold watches in the late 90's / early 2000's, with the Master Ultra Thin, Master Date, Master Moon, Master Geographic, Master Perpetual and Grande Memovox, without forgetting the Master Compressor Memovox and Geographic. And the Extreme World Compressor in platinum, too!

Here the Master Ultra Thin in white gold: 

The Reverso opted for a grey dial coupled to a platinum case: Reverso Reserve de Marche, Sun Moon, Septantième and Platinum Nr 2 Tourbillon.

The Reverso Sun Moon in platinum, limited to 125 pieces: 

The Reverso Platinum Nr 2 Tourbillon:

Let's not forget the Reverso à Triptyque, which came with a sublime hobnail grey dial, too.

If my memory serves me well, Jaeger Lecoultre gave up Grey for a bit less than 10 years, associating this color with white or rose gold watches. 

The Master Ultra Thin Moon came with a rose god and a white gold case, both with a grey dial. 

The Master Ultra Thin Perpetual Calendar opted for a white gold case / grey dial. 

The Duomètre, too, housed a magnetite grey dial for the Quantième Lunaire, here with the Chronograph and the Spherotourbillon: 

The Chronographe, 

And the Spherotourbillon. 

And let's not forget that the Reverso, too, received a grey dial, which is also made in enamel and guilloché, one of the three Tribute to Holder, made in 2018.

And the Reverso Tribute Duoface Rose Gold Fagliano 100 pieces issued in 2018, too.

So, from 2016 to 2018, we had a new wave of grey dials, at Jaeger Lecoultre... 

A new trend?