I recently scored an OEM roof rack....I already had red spray paint. I painted the end caps to match the Mirrors/red trim on the GTI. The Rustoleum Apple Red is very close it seems a touch closer than the Krylon but for stuff like this either one is close enough.
CSB: rack was part of package deal...after all was said and done not only was the rack free I got enough $ for make the drive to NJ worth it.
Ever think about painting/wrapping the silver part of the crossbars? I think I might consider that just gotta come up with a way to do it well and won't interfere with the t-slots