A background image that keeps it's natural width and height.

A background image that will scale to cover the entire background.

Leftover space between tiled images will be blank.

Images will stretch to take up to take up leftover space. Background position will be ignored.

Keep the image at it's natural size.

Scale the image proportionally so that it covers the background.

Scale the image proportionally so that it fits entirely in view.

Set only the background image width, the height will be scaled autmatically.

Set only the background image height, the width will be scaled autmatically.

Set both the width and height independently. This can potentially skew the image.

Here's an example of creating a background gradient:

Background.gradient 0 [ step Color.blue, step Color.green]

The first number of the gradient angle given in radians, where 0 is pointing up.