# UpdateGuidelineDesignSettingsBackgroundColor > Type in domain **Guidelines** - HTML: [UpdateGuidelineDesignSettingsBackgroundColor.html](UpdateGuidelineDesignSettingsBackgroundColor.html) - Raw SDL: [UpdateGuidelineDesignSettingsBackgroundColor.sdl](UpdateGuidelineDesignSettingsBackgroundColor.sdl) - Covered by: [llms.txt](../llms.txt) ## Fields - `backgroundColors`: `[GuidelineDesignSettingsBackgroundColor]!` _(beta)_ — The background colors.