I used satin for jacks rig....you cant use any old paint tho...you would have to use primer for most on bare metal....so what i did...is go to your local car shop... not halfords. and get some spray that u can spray on bare metal or anything for that matter...same paint i used for jacks AK-47. its about £5.00 for a big can and the finish is mint.
If your interested i can get the make of it if you want.