I am told that anodising needs to be prepared well because of its properties if it is to be painted. I would bother to locate a really good paint in a can and spray the mast. there are some good silver spray and gold. IF you get a good spray undercoat as well you will get away with the whole job for less than 50 bucks.
Some homework on prep (with a spar maker) and paint will get you a result you are hppy with.