Go to almost any tractor supply,,,,type,,suedo store in your area. We have a small family run tractor/farm store,,chain store in my area,,that has about 8 stores scattered around here. They sell many colors by either quart or gallon that matches ANY tractor,implement you can think of. A gallon,,is about $35 per gallon,last time I looked there. This is what I would go with,and just hand brush it on.Even though it takes some time,,it covers much better than trying to get your piece either sanded down or sand blasted and then spraying the piece. The time spent sand blasting the piece ( and cost) simply isnt worth it to me,
BC