I watched Spectreman as a kid. It played on weekday afternoons some time in the very lates 70's or early/mid 80's. I use to love the show, but really don't remember much about it.
I know there was some guy (Who always seemed to be wearing a white leisure suit) who could change into this Gold suited (Robot?) hero. Sometimes he was normal size, other times Godzilla sized.
When you're chewing on life's gristle, don't grumble, give a whistle, and this'll help things turn out for the best, and Always look on the bright side of life.
I remember Ultraman! He was silver and red and had the awesome fin and white bug looking eyes! I had the toy of him and the reptile looking bad guy and they were great to toss around and have GI Joes shoot at! Good memory!