Need advice: Anyone have experience painting with "Bianchi green"?

I'm sanding down, priming, and repainting an old Bianchi frame. It's a Strada from 1987 but it'll soon be a sweet single speed. It has actually had a short life as a SS already, so I guess it'll be a sweeter one when I am done with it.

I went to the local paint store but before I could even get halfway through the official name of the colour - pantone 333 - she cut me off and said the colour is "super protected in terms of paint". I'll have to try my best to match it to the colour swatches I have from most of the major paint companies.

Ultimately, I want to come as close to paying tribute to Bianchi as possible; has anyone out there found a really close substitute from Ben Moore or Cloverdale etc?

The interweb also mentions "celeste", but I like the brighter shade of pantone, which is certainly what you see on many of their newer frames. The colour just pops a little more.

Thanks.

Edit: I added the 333 to Pantone since the numbers kinda matter!