auntpolly, are you speaking to me???
If so, I believe you have misinterpreted my post. I think anyone who gets up in arms over a stamp, looking for some hidden meaning or insult in its selection or its rejection, is probably finding lots of unintentional things to be offended about.
A stamp might be just a stamp to the sender (as you said), or mean nothing more than that the sender liked it him/herself for whatever reason.
I've never heard of anyone being converted (or proselytized) to a particular religion because a religious stamp was used in the mail, but I suppose anything is possible. Somebody declining to choose a particular stamp because it is 'too white' to me means she chooses stamps that have some significance to her, whether artistically, culturally, or whatever. I doubt it was meant to insult the white race. Again, it's possible she DID mean it as an insult, I just think it unlikely and am not going to assign a negative intention to a perfect stranger's offhand comment.
And just because someone chooses stamps for some personal reason doesn't mean s/he is looking for every mail recipient to recognize and acknowledge this. Heck, most of my outgoing mail is bills and probably goes through a computerized envelope-opening system, never to be seen by a human. I'm buying the stamp for
me and my taste, not for any ulterior motive.