Hi Nathan (in response to post #188 of this thread. Way back in 2007),
I'm the new owner of 414 "Sea Glass" and I've read through this thread about 5 times now (yes it's a little much but I'm excited damn it!) and I just realized I can actually contribute here.
The portlight frames still look great 10 years later. No chipping or fading, or at least if they are fading it is very even. For this specific application it looks like the rustoleum is a great choice.
-Ben