Patience is a virtue, and this is a messageboard. Notice the lack of "Instant" in "messageboard". Keep in mind that all this is for free. We don't get paid, which means we do it in our spare time. And spare time can be scarce. So please, have a little patience.
As for your question:
most compact cameras tend to do weird things to the colors, depending on the situation. If the camera thinks it is photographing a landscape, it will bump up the blues and greens to get a more saturated look. For portraits, it lowers the reds a bit and softens the image somewhat.
Most cameras offer controls to manually select what "picture style" you want, but I have little experience with compacts so can't give you a good recommendation on that.
Right now I think the best compact to get is the Canon S90, it's quite customizable, but it doesn't come cheap. If the SD4000 looks good to you, and looks good in reviews, I'd get it. Beware that one week is a short time to get the hang of a new camera though!