I did it! Pulled the triger on this:

[Uncle Buck]

Really nice project on a cool classic. Needs to be a classy colour, of your choices green gets my vote but I’d lean to a mineral grey.

[ZR]

Deep grey or Silver would be my vote.

[RedSN]

Turquoise

[Quicksilver]

Turquoise

Love it. BUT: it could be thought of as a shade of blue, so no go.

[Laffs]

[Chinga]

Silver or White.

[bluetoy]

Every car on the road now is either white, black or grey. I'd go with a color. Green sounds good. Love the turquoise though.

[Quicksilver]

when I had my yellow Cobra, I was proud of the colour. I'd park on a street downtown when visiting a client, and when I looked back I would see a row of black and dark blue cars, one after the other. Occasionally there would be a red car, and then my yellow car. IT really stood out.
I don't think the Avanti body style works very well with bright yellow, and in fact is probably better with a darker colour. That's why I'm considering emerald Green. Or maybe Sinnamon, which is a Dodge colour.

[Zippy]

Something to consider is going with a colour that is easily matched if something bad does happen down the road. Going with some weird 1 off colour may come back to bite you in the butt in the future.
My vote would be Red or a deep blue especially if you were going to keep all the chrome. But it's your car, you should pick the colour you want.

[Quicksilver]

Thank you. As mentioned, blue is absolutely out of the question. There is what we call the Steinberg Family Blue Car Curse, which has affected every blue car we've ever had, so I won't be stupid enough to go blue again.
And yes, I will be getting a ready made colour rather than a custom mix so that there will be no problem matching it.