To activate a webpage background content—a color, texture, or image—simply select the semantic trigger from the pop-up menu. The webpage triggers are BKG-COLOR, BKG-TEXTURE, and BKG-IMAGE. Using these will apply the default background styles from your dashboard widgets:

• BKG-COLOR: This fills the webpage background with the color of Styles Dash > Body Widget > $Color. To override, set $blogBkgColor.
• BKG-TEXTURE: This fills the webpage background with a scrolling texture made of the repeating image BodyTexture.png. To override this texture with a different one, set $blogBkgTexture to some other file inside your default Theme Folder.
• BKG-IMAGE: Fills the webpage background with the fixed image BodyImage.png (stored in your current Theme Folder). To override this with another background image, set $blogBkgImage to some other file in your default Theme Folder.

You can add other options to modify these:

The modifier for BKG-TEXTURE is BKG-FIXED, which makes the BodyTexture.png texture fixed.

The modifiers for BKG-IMAGE are BKG-XFIT and BKG-YFIT, which stretch the BodyImage.png image to fit the width or height. (You can use both to fit the image exactly to the browser.)