Culturally sensitive smileys

Yesterday I was having a deep and meaningful IM chat about why smileys are all yellow, when yellow's a crappy, pus-ridden colour almost no one wears or likes. The only conclusion we could reach was that the yellow faces are supposed to be like the happy sun shining down.

But that is so culturally imperialistic to a Northern European worldview. If you lived in the Sahara desert, you wouldn't think the sun was happy. All this must be very confusing to internet users in warmer countries, where a yellow disk signifies imminent dehydration, sunstroke and death. "Why are you wishing the evil heat death on me?" they probably say when you flash them a happy face.

Therefore, I would like to propose that versions of Instant Messaging software destined for hotter climes replace nasty yellow faces with cool blue or green. You could also do the same for Goths with black/white, though I think that might be baked. And while we're at it can we replace the game where you go "hotter hotter colder" to find something?

I'm not entirely sure if this is an idea, but in my culture fishbones are used as fertiliser, and croissants look like horns which are symbols of evil.