If you can borrow a Gios the color you want, nearly any city of any size has
a color match business used by local body shops to match paint. The one
here in Lansing charges $17.50. They do a computerized color match and will
tell you an exact mix to achieve the color you need.
If you asked local body shops I'm sure they could direct you to such an
operation.
Tom Sanders
Lansing, Mi