I would try filling with touch up and leveling. I would be willing to bet the paint has some sun fade, even if it's minor, and would be a more obvious mis match due to larger area if you sprayed. You'll also need to level the area that was taped off.
If you haven't already you should have a peek at dr. Color chip products. They work quite well in my experience for small to moderate chips.
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2015 Cosmic Blue Metallic Wrapped X3 35i ///M Sport
Full 3M Vinyl Wrap | Flat Black Grilles
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