[Phlogiston]

It might, but I would not count on it. Think of it this way - you have 2 dots, one is white and one is brown. If you try to match them by spraying both with brown toner, the white one will always be lighter until you spray on so much toner that they are both black. Not a good thing.

Try to get the "hole" to match as closely as possible prior to using toner. Using a paint brush and toner on the spot is OK.