Portland cement paint
for stucco

Try fog coat from La Habra. 

Fog coat  is cheap and fast and you get your 
choice of colors. Follow the instructions on the bag, 
and put it on with a garden sprayer. It only costs 
about $29 a bag plus shipping and a bag will do about 1000 
square feet. 
La Habra only sells through distributors. 
Salmon Bay sand and gravel in Seattle,Washington 
is a good place. 
http://www.sbsg.com

Make sure the proportions are about the same as 
the bag says or you'll clog up your sprayer. 
We had to hold the nozzle about 3" from the wall. 

2 coats is enough. 

If you want to, you can make your own, like whitewash. 
I have seen this done a lot, but never have 
done it. 
I am going to guess at a formula, if you like 
white.  You can blend mason lime with 
white portland and fine white sand. 

I would try about 1/3 each. Wet the wall 
down and slop on two coats with a whitewash 
brush. 

Hope this helps. 

Thanks for visiting my site