I honestly don't give any thought to a frame, just because not everyone does it. All of the logos that I use when I play are framed.
I just try to keep everything uniform. Some guys might do different colored borders, but it would drive me nuts to look at different colored borders in the game.
What would be better if when somebody requested a logo to specify a border or not. I like to use the borders that come with the default logos, so if somebody wants a border, that's what I would give them.
So did I actually answer your question? I don't even know if I did.