How can I effectively paint outdoor plastic chairs to give them a fresh new look?

To effectively paint outdoor plastic chairs for a fresh new look, follow these steps:

1. Clean the chairs thoroughly with soap and water.
2. Sand the surface lightly to help the paint adhere better.
3. Use a primer specifically designed for plastic surfaces.
4. Apply multiple thin coats of outdoor spray paint in a well-ventilated area.
5. Allow the paint to dry completely between coats.
6. Finish with a clear sealant to protect the paint from outdoor elements.