Having 30 plus years in Autobody and paint industry the way I would do it is spot paint the color to the repair area and feather the color out to blend it to the rest of the panel then clear coat the entire panel to seal off the blend, that will also require sanding the entire panel with 1000-1200 grit sand paper and if an adhesion promoter is available in your area, seal the entire panel with that before the clear coat.
