What yrs is your? You didn't add it in the your cp info. In 08 they went with Cardinal Red which is different from the Sport Red. The Paint number is the last numbers in that list in the glove box, at least mine. So we know from Dave that s Sport Red is code 63.
Mine is 75U for the Dark Gry Met but then Gm also calls it Techno Gray
Cardinal Red is also called Merlot Jewel Met and is code #79
You can try using this site: http://www.automotivetouchup.com/index.htm
Here are paint codes from KBB.com http://www.kbb.com/KBB/NewCars/Color...HR_196540.aspx

 

without looking in mine I can't remember which way they face but it should be on the bottom right having letter and number combo, c 67 might be it dunno without seeing, sorry

 

U is upper, L is lower... Gm used to paint 2 tone colors. Both U and L(ie,U19,L19) should be the same if the car is 1 color.

 

I got 63 and U817k off the glove box. Can't find sport red metallic anywhere. Pep Boys, Autozone etc. They have it in the books but not on the shelves

 

it will be u817k