People always need positive changes in their life and we,designers need more than anyone i think.Most of us work more than 8-10 hours(maybe more) a day looking at our computer screens.So one of the best way to remove yourself from stress is to have a refreshing and colorful wallpaper.Personally i change my desktop desktop wallpaper once a month and this time i used a vector wallpaper (Yoga Girl By Sunset) which is in the below collection.