2010 Spring and Summer Beauty Trend Blue Eyeshadow. Wondering what beauty trend is turning heads this spring and summer season? How does blue eyeshadow sound? From cat eyes, to blue bold eyeliners, and blue smokey eyes, blue is the hottest look around. It speaks volume this season and you can wear it during the day as a sexy splash of eyeliner color, or go bold during the nighttime with blue smokey looks. Always pair blue eyeshadow with soft pale colored lips and cheeks for a more model modern look. Look below to see how you can wear blue this season.