yes you need 2 blue keys, but the 2nd blue key you need can be any key from any fiat code system1 vehicle. so for example you could go to timpsons and get a new key cut using your existing blue key, and then get the new key coded using a key from any other bravo, brava, marea, mk1 punto or cinqcento. that will cost you approx £20.
however in your case there is no need, just get the blue key copied at timpsons and save yourself the hassle.
however in your case there is no need, just get the blue key copied at timpsons and save yourself the hassle.