Not sure if this technique will relieve your stress over painting tons of red uniforms, but it will certainly make it easier to deal with.
Spray prime your Brits with red brown auto primer. Let dry.
Use brown ink to slop on the uniforms, flesh and helmets. Let dry.
Dry brush the uniforms with red. Let dry.
Highlight red uniforms with reddish/orange. You guessed it....let dry.
Now use two tints of flesh (one darker, than another lighter) to high light the flesh of the figures
Paint white straps.
Paint the trousers blue, boots black and use khaki to highlight the brown inked helmet.
I use the same technique for all red uniforms and saves a TON of time.