# StudyBandBackgroundPreferences [Integration guide](https://docs.lumencharts.com/charting-library/reference/compatibility) · [Reference index](https://docs.lumencharts.com/charting-library/api/) Public contract reference. This declaration describes types and callback shapes; availability is constrained by the linked integration guide and the runtime capability. Legacy product-specific fields are not a promise of implementation. ## backgroundColor {#backgroundcolor} ```ts backgroundColor: string; ``` Use the type signature above and the integration guide for the owning capability. ## transparency {#transparency} ```ts transparency: number; ``` Use the type signature above and the integration guide for the owning capability. ## fillBackground {#fillbackground} ```ts fillBackground: boolean; ``` Use the type signature above and the integration guide for the owning capability. --- Documentation page: https://docs.lumencharts.com/charting-library/api/StudyBandBackgroundPreferences