Brush your rail with a dry brush to remove any excess dust, hair, etc.
Decide your paint color, American Persian Blue, and a wide paintbrush to cover the base of the rail. Not a fancy paint, but a rough coverage. 1 Coat works if you want, sand the edges, and give a glaze to get a primitive look. Or for a more polished look, you will use 2-3 coats for coverage. Let it dry for a few minutes.
To cover your letters on the rail, use a flat brush. I am using Primary Red, added to your paper plate. Cover your letters completely, remembering to get on the edges, inside and outside too. You can do just 1 coat of red if you prefer.
Set aside to dry.
You can over your blue coat 1 more time, by carefully turning your rail. Set aside to dry.
Touch up the red with one more coat. Be sure to be completely dry before moving to the next step, about 24 hours.