Unfortunately, high metallic silvers like Reflex never touch in properly as the metallics never get to sit the way they do when sprayed correctly. The result is that they look dark.
Don't buy Halfrauds, it is garbage. Order some paint either from VW or from a motor factors (if you do order it from a factors, ask for the lightest variant/shade). If you get a VW touch in pen, don't use the brush that is supplied as it's far too big and clumsy. Instead, use a very fine artist brush that you'll get from any art or modelling shop, failing that even the end of a cocktail stick will do the job.
The trick is to get the smallest and thinnest amount of paint possible into the chip. Flash it off with a heat-gun (or hair-dryer if you don't have one) for 30-60 seconds and then repeat the process until the chip is sealed. It will never be perfect, but it will be subtle.
HTH
