Remove the trim from the shower by unscrewing the screws that are holding the chrome fixtures in place.
Place the trim items onto a flat surface that is covered with newspaper or a drop cloth.
Place a few drops of water onto a 600-grit piece of sand paper and use the sand paper to sand the chrome trim until you have a smooth, dull-looking finish.
Shake a can of spray trim paint to mix the paint. Do this for about two to three minutes.
Hold the spray paint about 10 inches away from the trim and spray across the chrome piece using a steady, sweeping motion. Move the can slowly enough across the trim to coat it with color, but don't move it so slowly that the paint begins to run.
Wait for approximately three hours as the paint dries.
Add another coat of paint to the chrome trim pieces and wait another three hours for this coat to dry.
Reattach the trim pieces to the shower.