Actually I'm not from the UK, I just like your English particularities.

But I don't even know how to speak/write proper English, my main language is Brazilian Portuguese.
In my case it's only a matter of taste, I don't really care that much if it's "color" or "colour" when I'm just reading (that's why my previous posts were filled with some smilies :tongue:). I can keep writing "colour" in this environment, plus (hopefully) I will be able to translate mIRC's features, so there's no problem at all.
If I ever demand such a cultural change (at least I consider it this way), I will surely be focused on accent rather than spelling, also in a very personal environment, because I'm aware that most people will simply be used to American English.. no one can change this nowadays.