After doing some more research on different possible ways to relume a "radium" dial, i've just come across someone using photoluminescent powder and resin to make a hardwood table glow in the dark by filling in the voids with the resin and powder. After doing some googling, i came across a couple of websites that sell this powder.
The powder appears a whitish light grey during the day, and can glow all sorts of colours at night.
I distinctly remember reading a thread from Adam about original Radium being an off white / grey colour during the day but glowing bright green at night.
Has anyone experimented with this stuff? If radium was grey to begin with, perhaps this could give a real authentic look to a trench watch with a grey numbers and green glow at night.. just like they were from the factory?
Here's some pictures from Glow products,glow stone - Realglow.
If this aint like original radium green, i don't know what is