Along with animated transitions a gradient with 1 state is considered static.
Background gradients are handled under a widget, row or cell's styles menu. They can flow in 4 directions and transition at variable speed. The gradients can take up to 4 states to transition between. If only 1 pair of colors are specified the gradient will be static.
Diagonal & Radial
Prime adds two additional directions, diagonal and radial for a total of 4.
When more than 1 pair of colors (states) are set the gradient will transition between them at the given speed.