I'm a big believer that your Christmas tree & decor should match the rest of your house, and yes, that includes wrapping paper too! So, if your house looks like this:
Your tree should look something like this:

This tree in Lee Kleinhelter's living room is probably my favorite non-traditional Christmas tree ever. It may seem odd to have a yellow and white tree, but it goes seamlessly with her decor and anything else would have stuck out like a sore thumb. And because I love her style so much, here's some other pics from her house (from Cottage Living mag):
*via martha stewart, i suwannee, cottage living