Im about to be a freshman in college is changing how I look a good idea?

Ive been thinking about completely changing how I look for college. Right now im pale, have blue eyes, red medium length hair, and i hate it. Ive been working on tanning and im getting pretty dark, and started dieting and working out im wondering should I dye my hair dark brown with a really blonde underlayer and bangs, get green colored contacts, and extensions? Opinions please?