[OT] Figure painting question

I have 15mm and 6mm troops and I'm wondering how to do camo on them. 
The pattern I have in mind is more or less the US Gulf War era chocolate
chip, or one of the African "leopard spots" patterns.
Constraint 1: no airbrush
Constraint 2: it needs to be quick; anything time intensive will take me
the rest of the year to complete.
Constraint3: I am looking for lots of small speckles rather than the
well-defined spots that eg Andy Cowell's troops have (Andy posted the
link a few weeks ago--quite depressing, for those of us who default to
spraypaint....)

My fevered imagination has come up with two ideas:
a) put some paint on a toothbrush and flick the bristles with a
knife/pencil/finger, creating a spray.	
b) mix a khaki wash and add some paprika or something similar.

Suggestions?

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