The VIN plate may be located on the B-pillar on the XC60 - possibly low down on the rear side so you would have to open the front and rear doors to look for it. Take a pic of it and we can tell you what digits on it refer to the paint code. Usually a 3-digit code possibly followed by 2 digits (such as 411-11). The first 3 digits are the paint code. If you google Volvo paint code xxx (substitute your 3 digits) you should find a few links to the colour codes, and if it says something like Mystic Silver and your car is silver, you have a winner!