The addon looks great, however the option to set background/backdrop visibility & color would be even greater.

Care to elaborate on the visibility? You want an option to always show the background?

yup, always show background + the option to set its color.

Always show background should be a walk in the park. Not sure how I would go about the color though. It's currently using the prefab CRB alpha colors with the WhiteFill sprite to accomplish the background. Will look into it though.