1) Sand down your poles. not super gritty sandpaper, just gritty enough to take off some of the old paint, and to texture the metal so the new paint sticks.
2) Spray your colors. if your taping, do your first color, several coats. then tape, then do your second color, several coats. let each coat fully dry before you do the next one. itll look alot better if you do a shitload of thin coats, rather than a couple thick gloppy ones.
3) After all those dry, get a can of clear spraypaint. Coat several times with that. Without it it will chip horribly. Even with the clear it does get beat up pretty fast, but whatever you can always paint em again.