| Yep rosso red sounds right to me, I was shown some when I was trying to match my 'anniversary red' ST2 and the paint codes showed it as 92 onwards. Anniversary red is too orange, rosso is a redder red - if that makes sense.
The only way you'll get a good match though is to take it to a professional, years of exposure to sunlight, polish and dirt will have changed the original colour | 
Jools
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