i can't tell you HOW MANY americans i've come across who want to be idiot grammar nazis and stubbornly insist that i need to learn some english because i spell it "colour." pisses me the fuck off that they act so up there and think that they know everything there is to know about english when the original language came from europe. when will some of them realise (yes, i use "realise" and other "z" words with an "s") that america isn't at the center of everything?
i grew up with the british spellings and even though i've been going to school in the US for awhile, i've never been able to get used to the american spellings. the words just looks odd and seems really out of place to me.
i was genuinely surprised though, to find that none of my american professors/TAs have ever corrected my british spellings or made an issue of it, or have even corrected my grammar. ever. so i find it twice as funny and three times as annoying that regular kids will try to "correct" my english.
I use the British spellings! I was born and raised in South Africa, which used to be colonized by the English and the Dutch, so I learnt British English, obviously... plus Americans suck! They're so rude and their accents are so annoying. But British accents are even more annoying and they have bad teeth! I think I'm lucky, cuz South African accents are somewhere in between, just a little closer to English accents, accept I've been living in a different country for a long time so the only English I ever hear is American television and my parents, and my dad is Portuguese so his accent is even stranger than mine, so I have my own weird accent that doesn't really belong to any country in particular anymore. O.o I sound South African and Australian and British all at the same time but I pronounce most things like an American, so I just sound kinda STRANGE...
I don't think it really matters, it's just where you come from. I'm a brit, so I naturally am used to 'colour', but I don't have any beef with 'color' either. It's just the way language has evolved in English speaking countries.
I'm Canadian, so I was taught the English spelling in school (so "colour"). But by living in North America (and with the help of the internet and all), I think I'm more used to read "color" everywhere. The American spelling is also much more common in my field of study (computer sciences).
BUT! Even with all this, I prefer to use the English spelling of "colour" and all is friends (behaviour, odour, flavour, etc. )
I love certain words with the non-American English spelling, like humour, favourite and theatre, but for the most part I think the "u" is useless and I think words should end with "-ize" not "-ise." Though, I think it's all a part of phonetics as well: Alphabetized sounds (and looks) better with American accents while Alphabetised sounds (and looks) better with European/Canadian accents~
"color" just because I use the American spellings.
Not to say that British isn't nifty, though. I kinda like "re" instead of "er" for Theater. The "re" at the end of my name (sumre, pronounced "summer") was because my mom wanted to spell my name differently and thought it'd be nice to take out the M and switch the E and the R.
"Colour" can look kinda nifty, but I prefer "Color" myself. :3