Considering my culture, being chinese, it is very common to wear red or those bright colored silk (not always silk) clothing. Also in my family ( I don't know if the other chinese families do this) we have to wear brand new PJs to sleep in on the day of chinese new years.
There is a bunch of stuff you can do and can't during the month of chinese new years. I learned just this year, that we couldn't buy new shoes for the month of chinese new years and also you are not allow to sew on the day of. And there is always the welcomed tradition of getting red envelopes from family. And also we have the sayings of wishing others health and wellness.