I absolutely love colored contacts and wigs. So far I only have a black pair and a blue pair of contacts, and one wig of my own - but I plan on getting more contacts in the near future.
I originally bought a wig for work, because I had bright blue - and very unprofessional - hair. I'm not fond of wearing wigs during the summer as it gets too hot, so I ended up re-dying my hair after a while so that I did not have to wear a wig.
As for colored contacts, I got my first pair (black) about four months ago, and recently invested in a vibrant blue pair. I love wearing contacts because they make me feel like I am an entirely different person. I can change the color of my eyes to fit my mood, how I wish to portray myself, and what I want to see in the mirror. Sometimes I even wear a different color in each eye.