Your local dealer should be able to get you either touch up bottles or a spray can of the matching color. Another option is to get a pint mixed at a automotive paint supply shop and use an airbrush.. you'll get a much better result, trust me. Only draw back is you'll need clear urethane to go over the grey basecoat and then buff it out. Sounds far more intimidating than it is. Your VIN code will provide the info needed for the mix.
Go BUCKS!!!
Go BUCKS!!!