Quote Originally Posted by Wingshaw View Post

I was concerned that grey would make the image look a bit flat, but I think your experience and tips have convinced me to give it another try.
Your concerns are not without a reason, and i gotta explain a small but important detail about it. If you go for traditional watercolouring with separate colours, never use a pre-made grey or black - they look lifeless and dull. Instead, mix the grey tone out of other pigments - which would be red and blue (i don't know if ultramarine blue works, but from what i've learned, coelin blue is the best for this purpose; about the red, i'd advise to take a brownish red, and to mix in a just a tiny bit of clear red).

With this mix you can get everything from a light gray to black, depending on how much water you use. Be aware that the mix of pigments will not forever stay as such, and on larger surfaces you can sometimes have the colours slightly separating. But i guess when it's only about shadows on a city miniature, you won't risk getting that.