I remember the one issue of SW1 when Reed was repairing Rhodey's Iron Man armor and he asked Reed if he was surprised that there was a black man under the armor. Reed claimed "I never really thought about it...."
Whatever you say Reed.......
Well, I can believe he wasn't 'surprised' per se, it being more along the lines of 'Ok, maybe when I was talking to you, I might've thought you were white in my makeshift imagining of who you really were under there, as most of the other heroes are white, so now I know you're black.',
So I don't think seeing a black man revealed under the armour would register as surprise, so much as him perhaps re-aligning his perceptions, so I believed Reed when he said that.
I actually did think about that one back in the day reading them, lol.
I mean, growing up I was mostly around caucasian people, so when I am on the net, if I end up talking to someone a lot, and let's say I only know thier age and gender, I can easily just think of them as a 26 yr old caucasian man/woman, cause that is where my imagination naturally goes, due to my environment. So, if they are revealed as another ethnicity, I wouldn't say I was surprised per se, just going through the process of my perceptions being re-aligned, unless of course, they deliberately led me to believe they were caucasian.
there were a couple of other interesting moments and lines in SW....when the Human Torch keeps going on about mistrusting mutants, Jim Rhodes says 'Thank God he isn't black, eh?' and THT replies 'Knock it off Shellhead, you know what I mean..'
Which was an interesting exchnage, showing how folk can have one type of prejudice, and not equate it with the other, despite them being the same kind of thing.
Also, when Wolverine and Cap are arguing, and Cap calls Magneto a terrorist, and Wolverine replies 'Terrorists...that's what the big army calls the little army.' Man, that line had a big impact on me when I was a kid, you watch the news with them calling such and such terrorist groups, and you don't stop to consider that they think of themselves as an official army, no different than the official one recognised by the powers that be.