I stumbled on this GM paint color / code cross reference online and am curious if they are exact matches if someone knows. http://paintref.com/cgi-bin/colorcodedisplay.cgi?year=1970&manuf=GM
I'm not exactly certain as to your question's intent. So here goes my two cents... The colors cross reference from the Buick color listed (43 being 1971 lime mist)to GM color codes (WA4208) being the same as chevy's lime green 43, et al...I notices a lot of other colors from my previous and current vehicles cross over to the correct WA codes... WOW! I just noticed that black (19) goes back a LONG way as WA0848... That is the same code as the 1986 and 1987 19 black on the trunk label... Does this answer your question?
Depends on the type of paint... ANY competent paint jobber can mix the paint; YOU must provide the correct code for the paint. (GM WA 2165 is 1970 Buick #25 Gulfstream blue) http://www.autocolorlibrary.com/aclchip.aspx?image=1970-Buick-pg01.jpg This gives ONE supplier's mix for just ONE style of paint in acrylic enamel, (national compliant;can't use in California and certain other restricted areas)...in your color, #25 Gulfstream Blue, (GM WA2165). Just revise the type of paint to get the updated information.
https://www.teambuick.com/reference/years/70/70paint.php PPG code is 81838 Dupont code is 5139 I do NOT know how old or accurate these formulas are.
On the gsx what is the correct red also is the black just black. My dad's car is getting painted soon and want to get the red...is a quart enough. Thanks How about 1970 bamboo cream.
I would recommend BASF R-M or Glasurit. They have formulas in b/c for pretty much every old vehicle color. The correct WA # is 4026. I would be happy to mix up some R-M and do a sprayout card and mail it to you for a minimal cost.