You can paint your fence any color you like as long as it’s white.

“All houses must have white picket fences and full-width, two-story porches. Seaside is a planned city that was intended to create the same styles and sense of belonging that a 19th century city would. These two regulations are merely a couple among the many the city planners have devised that have led to the development of a city that looks somewhat like a Disney World resort” (http://www.dumblaws.com/law/1155).