Black!
'cause I wear black mostly. I don't care if people say it's not really a colour; just the absence of colour. Just makes me like it even more. Like a some kind of evil, light absorbing darkness that's a part of our lives no matter what you do! Muhahah!
But yah, other than for those reason, I like it 'cause it's easier for me to see since I'm a bit colourblind, I can never really get black mixed up with anything else as I tend to do with others ^ ^'