Another summer project I might take on (why? I don't know...I'm a glutton for punishment I guess). We have 4" lap steel siding on our 21-year old house in southern Wisconsin. The original color of the siding is a light tan, with dark brown steel trim. Can this stuff be painted? And will the paint last? I assume some sort of primer is necessary, but can a latex paint be used? I used to be an ACE paint specialist, but I never really learned about painting siding. We'd just get new siding otherwise, but this stuff is in perfect condition on most of the house...it would be a waste to get rid of it. Thanks!