Choose a color for the base coat of paint and a color for the stripes. The base coat will be painted on the walls first and the stripes will be painted over the base coat second.
Clean the walls with a water-based cleaner and a scouring pad, then clean the walls again. If the walls are dirty, the primer will not adhere to the panels.
Tape the edges of the ceiling and the place where the walls meet the floor. Spread tarps all over the floor and tape the tarps in place to protect the floors.
Prime the walls using a solvent primer. Roll the paint on using a paint roller, and cut in the edges using a 2-inch angled sash brush. Wait for the solvent primer to cure according to the directions on the can.
Paint the base coat of paint over the primer. Use the roller nap and paintbrush you used when you primed. You may use satin, semi-gloss or eggshell paint. Wait for the base coat to dry according to the instructions on the can.
Tape the outside edges of the stripes on the walls. Follow the lines of the stripes in the panels to make this job easier.
Paint the stripes inside the boundaries created by the tape you applied to the wall in Step 6. Use a flat paintbrush wide enough to cover most of the stripes but not so wide that it will make it difficult to paint within the lines.
Wait for the paint to dry then remove the painter's tape.