The Bop It Buttons
From icons to logos to buttons, offset colors are hip and trendy.
This pen is a simple offset color button with a Pink. Excuse my color selection ability if you think the color isn't 100000% the best flat UI pink.
This color comes from a ::before pseudo element on the button that is slightly offset by means of absolute positioning.
Upon hover this offset is set to 0, 0 bringing the color in line.
I added some simple keyframe animations in line with the once trendy game "bop it".