Now for some professional advice. I've been in the automotive refinish line of work for nearly 30 years and I've seen "it all". Matching color is much more sofiisticated(spelling) these days then ever before. Some paint companies are better then others at it and you end up with there expertise or crap. It's also a fact that you can load one paint gun and let two guys spray two diffrent parts and end up with two shades of the very same color. Operator technique also plays a key role in color match for some of the more challenging colors, Candies, Pearls, Optocal Effect, etc.. When push comes to shove, blending is always the best route for everyone involved. Theres no way the naked eye can tell the diffrence. And if done correctly you'll have years of great looks. By then you'll either want or need a respray or color change, what have you. If the shop is reliable with a good track record, I say give them the cance to make it right.