well, it seems you've made your mind up..
Any factory color is available in any manufacturers base/clear systems.. it's just a weight formula... whether PPG, Dupont, Glasurit, etc...
body shops are not buying "premade colors", well, any real bodyshop.. you have a tint machine and weigh out your own formulas.. heck, Chrysler ice blue has 13 variations, depending on what plant it was made in, etc, etc...
Just for the record... You will not find a higher quality paint than Glasurit.. Thats the only reason I suggested it since your willing to buy a quality paint.. It is top of the line, best across the board imo... best high solids clear eva... Good enough for Mercedes, BMW, good enough for me...
I just use my work tax id, when I get paint from my autobody supplier.. they've known me for years.. might be worth finding your local supplier (yellow pages) and stopping in for a chat, whether a PPG, Dupont, etc dizzy.. Most of the time, they sell multiple lines to some extent..
On a related note... catalyzed, quality paint has dramatically increased in price the last 5 years or so...... hazardous shipping increases have probably caused alot of this.. thanks EPA...