I painted my stock EX alloys myself graphite. No chips or fades in over a year.
wash rim thouroughly.
sand entire rim with 320 grit paper...wipe with damp cloth
sand again with 400 grit paper...wash completely and let dry.
the paint i used required no primer or clearcoat. (Duplicolor wheel coating you can find at AutoZone)
insert index cards between rim and tire, use tape to wrap valve stem.
Spray on a VERY light coat at first, doesnt even have to cover entire rim, let dry 5-10 mins. Do this for every coat till it's as dark as you like.
Wait one hour before putting rim back on car.
Your done.
pic of mine:
