Also a paint shop does not do that for free. I remember going to one and while talking to the owner his subordinate kept walking up and asking if this is the right color (they were matching) and the owner said, I think it needs a bit more ... 5 minutes later he would come back and show him and keep iterating. I don't think you can always just put some paint sample under a light and have a computer spit out RGB. It takes time and IS expensive to match paint, especially automotive, etc..