I have not had any problems with Vallejo black green or bronze green drying glossy dude.
I did buy some of the thinner aircolours too and they are fine.
I always shake the bejeesus out of 'em though and before squeezing a bit on the palette I squirt a touch into the water jar.
It may sound mad but they do thin better!.
So try a base of Vallej bl gr with pure black and a touch of purple, no purple for the main colour, and I add earth and or iraqui sand as highlight tones.
In the national army museum, the famous Time Machine mannequins showed a rifleman with very distressed clothing in the Peninsular. Where the seams met (or split), the greens were almost sandy white with a touch of green and the tattered black cuff edges were almost white.
This would look wrong on a miniature I think, almost impossible to handle as transitions from one tone to another and in our scales, more subtle techniques are needed.
I look forward to seeing your results.
Sometimes we think too much; I prefer the method of getting the paint on thin, acrylics are so forgiving you can transition any colours togther one over another and adjust tones as you go.
Then put it down and re'evaluate tomorrow.
I have just had to change a hussars completely finished silver lace ftom silver to gold.....('cause I am an idiot).
so I put on three thin layers of Vallejo wood glaze over the silvers and then added gold and german cammo beige, then gold and sand on and hey presto....I think
.
Enjoy your project.
Paul.