I wouldn't expect anything like those to match perfectly anyways. It will not completely cover the blemish as make it look like new again. Your best bet is to have the blemish buffed out if possible,and if that doesn't work,have the whole panel resprayed.
When they mix the paints for those,they mix them to the factory spec,so if you're using it on a 7 year old car,your paint is going to be faded naturally,and then when you use the scratch remover,it comes out the darker,more vibrant colour the car left with from the factory. But like I said above about the panel being resprayed,it'll look a little on an older car with faded paint,so you can tell where the new stuff was painted. Usually when stuff like that happens,you have to end up doing the whole car. When I wrecked my Celica,they painted half of my driver's door and blended in the rest. You could just see where they finished blending it in,and the paint was very weak and started chipping soon after where they had painted half of my door.
Plus you'll look like you've got polka dots all over your car if you use hat stuff on every little blemish,lol.
My car has some nasty paint chips and scratches,and instead of wasting my time and money on half assed fixes,I'm going all out and having the car resprayed,all the dings and everything removed and have th ecar returned to almost showroom condition.
