Sprayed out my test panel on Saturday. 50/50 old paint vs new mix. Think the paint store screwed up the first mix. they accidentally left the paint chip color card (which is straight from PPG) in my truck. its supposed to be the original color, BUT it doesn't match. it matches the new paint better.
Also after getting the hood out in the sun, think it would have been a difficult blend, its hard to describe w/o seeing it, but their first mix looks browner than the truck actually is. so even if the respray of the hood requires me to blend, it will be much easier with this new mix.
I'll say this though, this graystone metallic is a crazy color. you can look at it in different lights and different angles and it looks like different shades.