Grumps said:Olympic white and summit white are the same colour.
When I bought my Antara in 2012 it was called Olympic white. Vauxhall were cashing in on the London Olympics hype. Now its all over its back to plain old summit white.
I know this because I bought a touch up stick for stone chips etc and that's what the guy told me. Plus if you look online gmc have a paint guide somewhere and they are the same paint code.