Free cake sign by calvenable

This command gives the player a sign, that, when placed and right-clicked on, gives the player a cake. The sign displays 'Click here for' on the first line, in blue, and 'FREE CAKE!' on the second line, in bold red. I thought this would be a fun idea for something to put in a lobby or waiting area of a minigame, or perhaps could be adapted to give blocks that could be used to solve puzzles.