The Mazda 3s I'm driving right now has an orange (almost red) and blue illumination, and it is rather cool. The thing is that is isn't very intense red light like the Pontiac. The gauge lighting can be adjusted with the dimmer, like normal. Then there is this extra button that adjusts it to three brightness levels, and the dimmer will adjust it seperately within those levels. I use the lowest brightness level and half dim. That way it looks mostly blue with orange numerals. Quite a nice effect.
If Pontiac would provide you with the button I have that adjusts between dim, medium and bright, and also lets you use the dimmer, red wouldn't be a problem.
BTW, nice car, I really like the way that thing looks. GM did a great job with the G6, both Coupe and Sedan, the refinement is above anything I've seen from GM for a long time in a non 50k car. I hope it gives you good service for as long as its yours, enjoy your new ride.