I found this GM document that goes over the updates for all 2008 GM cars. It has color swatches including the Brazen orange:
http://www.gmfleet.com/pdf/2008_car_and_truck_guide.pdf
If you compare the Solstice "Brazen" swatch to the G8 "Ignition" swatch, they aren't the same - the Brazen is more of a red color. But there is actually a picture of the Canyon using that same color code (28u) and it looks a lot like the Holden ignition color so it may be that the swatch colors are incorrect.
Picture of GMC Canyon in 28u:
I did this mock of the NA Solstice in Brazen. Maybe someone who was on the recent mecca tour trip could tell me how close it is:
