Blue, but a really intense blue - closer to the color of the sky in the summer.
My favorite color used to be green - but over time I realized I didn't actually like it anymore, and I had said it was my favorite for so long - that it was just the trite answer I would give.
So habit made my favorite color green, even though it wasn't true.
So other tempers - think about it - when did you decide your favorite color, and like so many other things in life, has that changed? Do you actually like another color more now, and just never thought about it?