I'm currently experimenting to find a slightly blueish grey for the underbelly of a flyer I'm painting. Basically I'm aiming for something like on the Hawker Hurricanes in this picture:
I got some Ulthuan Grey here, but it is "just" grey. I also considered Fenrisian grey which seems a bit more blueish but is a bit too dark for my taste.
Now I have a bottle of Pylar Glacier (a very light blue contrast color) lying around and was wondering: has anyone here on dakka tried mixing Citadel air and contrast colors to use them in an airbrush? I don't mean applying contrast over air color, but really mixing the two and applying them together?